✨ Add errorprone and fix warnings/errors

The compiler will also treat all warnings as errors from now on.

build.gradle

@@ -15,6 +15,7 @@ plugins {
     id 'java-library'
     id 'com.github.johnrengelman.shadow' version '6.1.0'
     id 'de.marcphilipp.nexus-publish' version '0.4.0'
+    id 'net.ltgt.errorprone' version '1.3.0'
 }
 
 apply from: 'scripts/dependencies.gradle'
@@ -59,6 +60,7 @@ subprojects {
     apply plugin: 'java-library'
     apply plugin: 'signing'
     apply plugin: 'de.marcphilipp.nexus-publish'
+    apply plugin: 'net.ltgt.errorprone'
 
     test {
         useJUnitPlatform()
@@ -69,6 +71,21 @@ subprojects {
         withJavadocJar()
     }
 
+    tasks.withType(JavaCompile).configureEach {
+        options.compilerArgs << "-Xlint:all" << "-Xlint:-processing" << "-Werror"
+        options.errorprone {
+            /* These are just annoying */
+            disable(
+                    "JdkObsolete",
+                    "FutureReturnValueIgnored",
+                    "ImmutableEnumChecker",
+                    "StringSplitter",
+                    "EqualsGetClass",
+                    "CatchAndPrintStackTrace"
+            )
+        }
+    }
+
     repositories {
         mavenLocal()
         mavenCentral()
@@ -115,6 +132,8 @@ subprojects {
         compileOnly "org.checkerframework:checker-qual:${vers['checker-qual']}"
         api "io.leangen.geantyref:geantyref:${vers['geantyref']}"
         testImplementation "org.junit.jupiter:junit-jupiter-engine:${vers['jupiter-engine']}"
+        errorprone "com.google.errorprone:error_prone_core:${vers['errorprone']}"
+        errorproneJavac "com.google.errorprone:javac:9+181-r4173-1"
     }
 
     nexusPublishing {
@@ -180,4 +199,3 @@ subprojects {
     }
 
 }
-

cloud-annotations/src/main/java/cloud/commandframework/annotations/AnnotationParser.java

@@ -106,7 +106,7 @@ public final class AnnotationParser<C> {
         ));
     }
 
-    protected static <A extends Annotation> @Nullable A getMethodOrClassAnnotation(
+    static <A extends Annotation> @Nullable A getMethodOrClassAnnotation(
             final @NonNull Method method,
             final @NonNull Class<A> clazz
     ) {
@@ -118,7 +118,7 @@ public final class AnnotationParser<C> {
         return null;
     }
 
-    protected static <A extends Annotation> boolean methodOrClassHasAnnotation(
+    static <A extends Annotation> boolean methodOrClassHasAnnotation(
             final @NonNull Method method,
             final @NonNull Class<A> clazz
     ) {
@@ -163,6 +163,7 @@ public final class AnnotationParser<C> {
      * @param <T>      Type of the instance
      * @return Collection of parsed annotations
      */
+    @SuppressWarnings({"deprecation", "unchecked", "rawtypes"})
     public <T> @NonNull Collection<@NonNull Command<C>> parse(final @NonNull T instance) {
         final Method[] methods = instance.getClass().getDeclaredMethods();
         final Collection<CommandMethodPair> commandMethodPairs = new ArrayList<>();
@@ -184,9 +185,7 @@ public final class AnnotationParser<C> {
         }
         final Collection<Command<C>> commands = this.construct(instance, commandMethodPairs);
         for (final Command<C> command : commands) {
-            @SuppressWarnings("ALL") final CommandManager commandManager = this.manager;
+            ((CommandManager) this.manager).command(command);
-            //noinspection all
-            commandManager.command(command);
         }
         return commands;
     }
@@ -203,14 +202,14 @@ public final class AnnotationParser<C> {
             final LinkedHashMap<String, SyntaxFragment> tokens = this.syntaxParser.apply(commandMethod.value());
             /* Determine command name */
             final String commandToken = commandMethod.value().split(" ")[0].split("\\|")[0];
-            @SuppressWarnings("ALL") final CommandManager manager = this.manager;
+            @SuppressWarnings("rawtypes") final CommandManager manager = this.manager;
             final SimpleCommandMeta.Builder metaBuilder = SimpleCommandMeta.builder()
                     .with(this.metaFactory.apply(method));
             if (methodOrClassHasAnnotation(method, Confirmation.class)) {
                 metaBuilder.with(CommandConfirmationManager.CONFIRMATION_REQUIRED_META, "true");
             }
 
-            @SuppressWarnings("ALL")
+            @SuppressWarnings("rawtypes")
             Command.Builder builder = manager.commandBuilder(
                     commandToken,
                     tokens.get(commandToken).getMinor(),
@@ -353,7 +352,7 @@ public final class AnnotationParser<C> {
         }
         final Argument argument = argumentPair.getArgument();
         /* Create the argument builder */
-        @SuppressWarnings("ALL") final CommandArgument.Builder argumentBuilder = CommandArgument.ofType(
+        @SuppressWarnings("rawtypes") final CommandArgument.Builder argumentBuilder = CommandArgument.ofType(
                 parameter.getType(),
                 argument.value()
         );
@@ -384,7 +383,7 @@ public final class AnnotationParser<C> {
         final CommandArgument<C, ?> builtArgument = argumentBuilder.manager(this.manager).withParser(parser).build();
         /* Add preprocessors */
         for (final Annotation annotation : annotations) {
-            @SuppressWarnings("ALL") final Function preprocessorMapper =
+            @SuppressWarnings("rawtypes") final Function preprocessorMapper =
                     this.preprocessorMappers.get(annotation.annotationType());
             if (preprocessorMapper != null) {
                 final BiFunction<@NonNull CommandContext<C>, @NonNull Queue<@NonNull String>,

cloud-annotations/src/main/java/cloud/commandframework/annotations/FlagExtractor.java

@@ -48,6 +48,7 @@ final class FlagExtractor implements Function<@NonNull Method, Collection<@NonNu
     }
 
     @Override
+    @SuppressWarnings({"unchecked", "rawtypes"})
     public @NonNull Collection<@NonNull CommandFlag<?>> apply(final @NonNull Method method) {
         final Collection<CommandFlag<?>> flags = new LinkedList<>();
         for (final Parameter parameter : method.getParameters()) {
@@ -77,15 +78,14 @@ final class FlagExtractor implements Function<@NonNull Method, Collection<@NonNu
                                     parameter.getType().getCanonicalName(), flag.value(), method.getName()
                             ));
                 }
-                @SuppressWarnings("ALL") final CommandArgument.Builder argumentBuilder = CommandArgument.ofType(
+                final CommandArgument.Builder argumentBuilder = CommandArgument.ofType(
                         parameter.getType(),
                         flag.value()
                 );
-                @SuppressWarnings("ALL") final CommandArgument argument = argumentBuilder.asRequired()
+                final CommandArgument argument = argumentBuilder.asRequired()
                         .manager(this.commandManager)
                         .withParser(parser)
                         .build();
-                // noinspection unchecked
                 flags.add(builder.withArgument(argument).build());
             }
         }

cloud-annotations/src/main/java/cloud/commandframework/annotations/MetaFactory.java

@@ -45,16 +45,15 @@ class MetaFactory implements Function<@NonNull Method, @NonNull CommandMeta> {
     }
 
     @Override
+    @SuppressWarnings({"unchecked", "rawtypes"})
     public @NonNull CommandMeta apply(final @NonNull Method method) {
         final ParserParameters parameters = ParserParameters.empty();
-        this.annotationParser.getAnnotationMappers().forEach(((annotationClass, mapper) -> {
+        this.annotationParser.getAnnotationMappers().forEach((annotationClass, mapper) -> {
             final Annotation annotation = AnnotationParser.getMethodOrClassAnnotation(method, annotationClass);
             if (annotation != null) {
-                @SuppressWarnings("ALL") final Function function = (Function) mapper;
+                parameters.merge((ParserParameters) ((Function) mapper).apply(annotation));
-                //noinspection unchecked
-                parameters.merge((ParserParameters) function.apply(annotation));
             }
-        }));
+        });
         return this.metaMapper.apply(parameters);
     }
 

cloud-core/src/main/java/cloud/commandframework/CommandManager.java

@@ -111,7 +111,7 @@ public abstract class CommandManager<C> {
      *                                    registered to the command manager. This may be used to forward command registration
      *                                    to the platform.
      */
-    public CommandManager(
+    protected CommandManager(
             final @NonNull Function<@NonNull CommandTree<C>, @NonNull CommandExecutionCoordinator<C>> commandExecutionCoordinator,
             final @NonNull CommandRegistrationHandler commandRegistrationHandler
     ) {
@@ -307,6 +307,7 @@ public abstract class CommandManager<C> {
      * @param captionRegistry Caption registry to use
      * @deprecated Use {@link #setCaptionRegistry(CaptionRegistry)} These methods are identical.
      */
+    @Deprecated
     public final void registerDefaultCaptions(final @NonNull CaptionRegistry<C> captionRegistry) {
         this.captionRegistry = captionRegistry;
     }
@@ -669,13 +670,13 @@ public abstract class CommandManager<C> {
      * @return Exception handler, or {@code null}
      * @see #registerCommandPreProcessor(CommandPreprocessor) Registering an exception handler
      */
+    @SuppressWarnings("unchecked")
     public final <E extends Exception> @Nullable BiConsumer<@NonNull C, @NonNull E>
     getExceptionHandler(final @NonNull Class<E> clazz) {
         final BiConsumer<C, ? extends Exception> consumer = this.exceptionHandlers.get(clazz);
         if (consumer == null) {
             return null;
         }
-        //noinspection unchecked
         return (BiConsumer<C, E>) consumer;
     }
 

cloud-core/src/main/java/cloud/commandframework/CommandTree.java

@@ -434,6 +434,7 @@ public final class CommandTree<C> {
         return getSuggestions(context, commandQueue, this.internalTree);
     }
 
+    @SuppressWarnings("MixedMutabilityReturnType")
     private @NonNull List<@NonNull String> getSuggestions(
             final @NonNull CommandContext<C> commandContext,
             final @NonNull Queue<@NonNull String> commandQueue,

cloud-core/src/main/java/cloud/commandframework/LockableCommandManager.java

@@ -60,7 +60,7 @@ public abstract class LockableCommandManager<C> extends CommandManager<C> {
      * @param commandRegistrationHandler  Command registration handler. This will get called every time a new command is
      *                                    registered to the command manager. This may be used to forward command registration
      */
-    public LockableCommandManager(
+    protected LockableCommandManager(
             final @NonNull Function<@NonNull CommandTree<C>, @NonNull CommandExecutionCoordinator<C>> commandExecutionCoordinator,
             final @NonNull CommandRegistrationHandler commandRegistrationHandler
     ) {

cloud-core/src/main/java/cloud/commandframework/arguments/StandardCommandSyntaxFormatter.java

@@ -49,6 +49,7 @@ public class StandardCommandSyntaxFormatter<C> implements CommandSyntaxFormatter
      * {@inheritDoc}
      */
     @Override
+    @SuppressWarnings("unchecked")
     public final @NonNull String apply(
             final @NonNull List<@NonNull CommandArgument<C, ?>> commandArguments,
             final CommandTree.@Nullable Node<@Nullable CommandArgument<C, ?>> node

cloud-core/src/main/java/cloud/commandframework/arguments/compound/ArgumentPair.java

@@ -54,6 +54,7 @@ public class ArgumentPair<C, U, V, O> extends CompoundArgument<Pair<U, V>, C, O>
      * @param mapper     Mapper that maps the sub-arguments to the output type
      * @param valueType  The output type
      */
+    @SuppressWarnings("unchecked")
     protected ArgumentPair(
             final boolean required,
             final @NonNull String name,

cloud-core/src/main/java/cloud/commandframework/arguments/compound/ArgumentTriplet.java

@@ -55,6 +55,7 @@ public class ArgumentTriplet<C, U, V, W, O> extends CompoundArgument<Triplet<U,
      * @param mapper        Mapper that maps the sub-arguments to the output type
      * @param valueType     The output type
      */
+    @SuppressWarnings("unchecked")
     protected ArgumentTriplet(
             final boolean required,
             final @NonNull String name,

cloud-core/src/main/java/cloud/commandframework/arguments/compound/CompoundArgument.java

@@ -159,6 +159,7 @@ public class CompoundArgument<T extends Tuple, C, O> extends CommandArgument<C,
         }
 
         @Override
+        @SuppressWarnings("unchecked")
         public @NonNull List<@NonNull String> suggestions(
                 final @NonNull CommandContext<C> commandContext,
                 final @NonNull String input
@@ -170,7 +171,6 @@ public class CompoundArgument<T extends Tuple, C, O> extends CommandArgument<C,
             in the context, so we can then extract that number and forward the request
              */
             final int argument = commandContext.getOrDefault("__parsing_argument__", 1) - 1;
-            //noinspection all
             return ((ArgumentParser<C, ?>) this.parsers[argument]).suggestions(commandContext, input);
         }
 

cloud-core/src/main/java/cloud/commandframework/arguments/compound/FlagArgument.java

@@ -104,6 +104,7 @@ public final class FlagArgument<C> extends CommandArgument<C, Object> {
         }
 
         @Override
+        @SuppressWarnings({"unchecked", "rawtypes"})
         public @NonNull ArgumentParseResult<@NonNull Object> parse(
                 final @NonNull CommandContext<@NonNull C> commandContext,
                 final @NonNull Queue<@NonNull String> inputQueue
@@ -207,11 +208,13 @@ public final class FlagArgument<C> extends CommandArgument<C, Object> {
                                         );
                         if (result.getFailure().isPresent()) {
                             return ArgumentParseResult.failure(result.getFailure().get());
-                        } else {
+                        } else if (result.getParsedValue().isPresent()) {
                             final CommandFlag erasedFlag = currentFlag;
                             final Object value = result.getParsedValue().get();
                             commandContext.flags().addValueFlag(erasedFlag, value);
                             currentFlag = null;
+                        } else {
+                            throw new IllegalStateException("Neither result or value were present. Panicking.");
                         }
                     }
                 }
@@ -229,6 +232,7 @@ public final class FlagArgument<C> extends CommandArgument<C, Object> {
         }
 
         @Override
+        @SuppressWarnings({"unchecked", "rawtypes"})
         public @NonNull List<@NonNull String> suggestions(
                 final @NonNull CommandContext<C> commandContext,
                 final @NonNull String input
@@ -330,7 +334,6 @@ public final class FlagArgument<C> extends CommandArgument<C, Object> {
                     }
                 }
                 if (currentFlag != null && currentFlag.getCommandArgument() != null) {
-                    // noinspection all
                     return (List<String>) ((BiFunction) currentFlag.getCommandArgument().getSuggestionsProvider())
                             .apply(commandContext, input);
                 }
@@ -346,6 +349,7 @@ public final class FlagArgument<C> extends CommandArgument<C, Object> {
      */
     public static final class FlagParseException extends ParserException {
 
+        private static final long serialVersionUID = -7725389394142868549L;
         private final String input;
 
         /**

cloud-core/src/main/java/cloud/commandframework/arguments/parser/StandardParserRegistry.java

@@ -59,9 +59,13 @@ import java.util.function.Function;
  *
  * @param <C> Command sender type
  */
+@SuppressWarnings({"unused", "unchecked", "rawtypes"})
 public final class StandardParserRegistry<C> implements ParserRegistry<C> {
 
+    @SuppressWarnings({"DoubleBraceInitialization"})
     private static final Map<Class<?>, Class<?>> PRIMITIVE_MAPPINGS = new HashMap<Class<?>, Class<?>>() {
+        private static final long serialVersionUID = 958977651563195489L;
+
         {
             put(char.class, Character.class);
             put(int.class, Integer.class);
@@ -93,31 +97,31 @@ public final class StandardParserRegistry<C> implements ParserRegistry<C> {
 
         /* Register standard types */
         this.registerParserSupplier(TypeToken.get(Byte.class), options ->
-                new ByteArgument.ByteParser<C>(
+                new ByteArgument.ByteParser<>(
                         (byte) options.get(StandardParameters.RANGE_MIN, Byte.MIN_VALUE),
                         (byte) options.get(StandardParameters.RANGE_MAX, Byte.MAX_VALUE)
                 ));
         this.registerParserSupplier(TypeToken.get(Short.class), options ->
-                new ShortArgument.ShortParser<C>(
+                new ShortArgument.ShortParser<>(
                         (short) options.get(StandardParameters.RANGE_MIN, Short.MIN_VALUE),
                         (short) options.get(StandardParameters.RANGE_MAX, Short.MAX_VALUE)
                 ));
         this.registerParserSupplier(TypeToken.get(Integer.class), options ->
-                new IntegerArgument.IntegerParser<C>(
+                new IntegerArgument.IntegerParser<>(
                         (int) options.get(StandardParameters.RANGE_MIN, Integer.MIN_VALUE),
                         (int) options.get(StandardParameters.RANGE_MAX, Integer.MAX_VALUE)
                 ));
         this.registerParserSupplier(TypeToken.get(Float.class), options ->
-                new FloatArgument.FloatParser<C>(
+                new FloatArgument.FloatParser<>(
                         (float) options.get(StandardParameters.RANGE_MIN, Float.MIN_VALUE),
                         (float) options.get(StandardParameters.RANGE_MAX, Float.MAX_VALUE)
                 ));
         this.registerParserSupplier(TypeToken.get(Double.class), options ->
-                new DoubleArgument.DoubleParser<C>(
+                new DoubleArgument.DoubleParser<>(
                         (double) options.get(StandardParameters.RANGE_MIN, Double.MIN_VALUE),
                         (double) options.get(StandardParameters.RANGE_MAX, Double.MAX_VALUE)
                 ));
-        this.registerParserSupplier(TypeToken.get(Character.class), options -> new CharArgument.CharacterParser<C>());
+        this.registerParserSupplier(TypeToken.get(Character.class), options -> new CharArgument.CharacterParser<>());
         this.registerParserSupplier(TypeToken.get(String[].class), options -> new StringArrayArgument.StringArrayParser<>());
         /* Make this one less awful */
         this.registerParserSupplier(TypeToken.get(String.class), options -> {
@@ -125,7 +129,7 @@ public final class StandardParserRegistry<C> implements ParserRegistry<C> {
             final StringArgument.StringMode stringMode = greedy
                     ? StringArgument.StringMode.GREEDY
                     : StringArgument.StringMode.SINGLE;
-            return new StringArgument.StringParser<C>(
+            return new StringArgument.StringParser<>(
                     stringMode,
                     (context, s) -> Arrays.asList(options.get(StandardParameters.COMPLETIONS, new String[0]))
             );
@@ -167,6 +171,7 @@ public final class StandardParserRegistry<C> implements ParserRegistry<C> {
     }
 
     @Override
+    @SuppressWarnings("rawtypes")
     public @NonNull ParserParameters parseAnnotations(
             final @NonNull TypeToken<?> parsingType,
             final @NonNull Collection<@NonNull ? extends Annotation> annotations
@@ -186,6 +191,7 @@ public final class StandardParserRegistry<C> implements ParserRegistry<C> {
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public <T> @NonNull Optional<ArgumentParser<C, T>> createParser(
             final @NonNull TypeToken<T> type,
             final @NonNull ParserParameters parserParameters
@@ -200,9 +206,9 @@ public final class StandardParserRegistry<C> implements ParserRegistry<C> {
         if (producer == null) {
             /* Give enums special treatment */
             if (GenericTypeReflector.isSuperType(Enum.class, actualType.getType())) {
-                @SuppressWarnings("all") final EnumArgument.EnumParser enumArgument
+                @SuppressWarnings("rawtypes")
-                        = new EnumArgument.EnumParser((Class<Enum>) GenericTypeReflector.erase(actualType.getType()));
+                final EnumArgument.EnumParser enumArgument
-                // noinspection all
+                        = new EnumArgument.EnumParser(GenericTypeReflector.erase(actualType.getType()));
                 return Optional.of(enumArgument);
             }
             return Optional.empty();

cloud-core/src/main/java/cloud/commandframework/arguments/preprocessor/RegexPreprocessor.java

@@ -41,6 +41,7 @@ import java.util.regex.Pattern;
  *
  * @param <C> Command sender type
  */
+@SuppressWarnings("unused")
 public final class RegexPreprocessor<C> implements BiFunction<@NonNull CommandContext<C>, @NonNull Queue<@NonNull String>,
         @NonNull ArgumentParseResult<Boolean>> {
 
@@ -114,6 +115,7 @@ public final class RegexPreprocessor<C> implements BiFunction<@NonNull CommandCo
      */
     public static final class RegexValidationException extends IllegalArgumentException {
 
+        private static final long serialVersionUID = 747826566058072233L;
         private final String pattern;
         private final String failedString;
         private final Caption failureCaption;

cloud-core/src/main/java/cloud/commandframework/arguments/standard/BooleanArgument.java

@@ -117,7 +117,7 @@ public final class BooleanArgument<C> extends CommandArgument<C, Boolean> {
 
         private boolean liberal = false;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Boolean.class, name);
         }
 
@@ -231,6 +231,7 @@ public final class BooleanArgument<C> extends CommandArgument<C, Boolean> {
      */
     public static final class BooleanParseException extends ParserException {
 
+        private static final long serialVersionUID = -2688852086944850025L;
         private final String input;
         private final boolean liberal;
 

cloud-core/src/main/java/cloud/commandframework/arguments/standard/ByteArgument.java

@@ -127,7 +127,7 @@ public final class ByteArgument<C> extends CommandArgument<C, Byte> {
         private byte min = Byte.MIN_VALUE;
         private byte max = Byte.MAX_VALUE;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Byte.class, name);
         }
 
@@ -258,6 +258,8 @@ public final class ByteArgument<C> extends CommandArgument<C, Byte> {
      */
     public static final class ByteParseException extends NumberParseException {
 
+        private static final long serialVersionUID = -4724241304872989208L;
+
         /**
          * Construct a new byte parse exception
          *

cloud-core/src/main/java/cloud/commandframework/arguments/standard/CharArgument.java

@@ -102,7 +102,7 @@ public final class CharArgument<C> extends CommandArgument<C, Character> {
 
     public static final class Builder<C> extends CommandArgument.Builder<C, Character> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Character.class, name);
         }
 
@@ -156,6 +156,7 @@ public final class CharArgument<C> extends CommandArgument<C, Character> {
      */
     public static final class CharParseException extends ParserException {
 
+        private static final long serialVersionUID = 6458851071584278854L;
         private final String input;
 
         /**

cloud-core/src/main/java/cloud/commandframework/arguments/standard/DoubleArgument.java

@@ -127,7 +127,7 @@ public final class DoubleArgument<C> extends CommandArgument<C, Double> {
         private double min = Double.NEGATIVE_INFINITY;
         private double max = Double.POSITIVE_INFINITY;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Double.class, name);
         }
 
@@ -245,6 +245,8 @@ public final class DoubleArgument<C> extends CommandArgument<C, Double> {
 
     public static final class DoubleParseException extends NumberParseException {
 
+        private static final long serialVersionUID = 1764554911581976586L;
+
         /**
          * Construct a new double parse exception
          *

cloud-core/src/main/java/cloud/commandframework/arguments/standard/EnumArgument.java

@@ -131,7 +131,7 @@ public class EnumArgument<C, E extends Enum<E>> extends CommandArgument<C, E> {
 
         private final Class<E> enumClass;
 
-        protected Builder(final @NonNull String name, final @NonNull Class<E> enumClass) {
+        private Builder(final @NonNull String name, final @NonNull Class<E> enumClass) {
             super(enumClass, name);
             this.enumClass = enumClass;
         }
@@ -202,6 +202,7 @@ public class EnumArgument<C, E extends Enum<E>> extends CommandArgument<C, E> {
 
     public static final class EnumParseException extends ParserException {
 
+        private static final long serialVersionUID = 3465389578951428862L;
         private final String input;
         private final Class<? extends Enum<?>> enumClass;
 
@@ -228,7 +229,7 @@ public class EnumArgument<C, E extends Enum<E>> extends CommandArgument<C, E> {
             this.enumClass = enumClass;
         }
 
-        @SuppressWarnings("all")
+        @SuppressWarnings({"unchecked", "rawtypes"})
         private static @NonNull String join(final @NonNull Class<? extends Enum> clazz) {
             final EnumSet<?> enumSet = EnumSet.allOf(clazz);
             return enumSet.stream()

cloud-core/src/main/java/cloud/commandframework/arguments/standard/FloatArgument.java

@@ -127,7 +127,7 @@ public final class FloatArgument<C> extends CommandArgument<C, Float> {
         private float min = Float.NEGATIVE_INFINITY;
         private float max = Float.POSITIVE_INFINITY;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Float.class, name);
         }
 
@@ -245,6 +245,8 @@ public final class FloatArgument<C> extends CommandArgument<C, Float> {
 
     public static final class FloatParseException extends NumberParseException {
 
+        private static final long serialVersionUID = -1162983846751812292L;
+
         /**
          * Construct a new float parse exception
          *

cloud-core/src/main/java/cloud/commandframework/arguments/standard/IntegerArgument.java

@@ -134,7 +134,7 @@ public final class IntegerArgument<C> extends CommandArgument<C, Integer> {
         private int min = Integer.MIN_VALUE;
         private int max = Integer.MAX_VALUE;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Integer.class, name);
         }
 
@@ -198,6 +198,7 @@ public final class IntegerArgument<C> extends CommandArgument<C, Integer> {
          * @param input Input
          * @return List of suggestions
          */
+        @SuppressWarnings("MixedMutabilityReturnType")
         public static @NonNull List<@NonNull String> getSuggestions(
                 final long min,
                 final long max,
@@ -302,6 +303,8 @@ public final class IntegerArgument<C> extends CommandArgument<C, Integer> {
 
     public static final class IntegerParseException extends NumberParseException {
 
+        private static final long serialVersionUID = -6933923056628373853L;
+
         /**
          * Construct a new integer parse exception
          *

cloud-core/src/main/java/cloud/commandframework/arguments/standard/LongArgument.java

@@ -127,7 +127,7 @@ public final class LongArgument<C> extends CommandArgument<C, Long> {
         private long min = Long.MIN_VALUE;
         private long max = Long.MAX_VALUE;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Long.class, name);
         }
 
@@ -229,6 +229,8 @@ public final class LongArgument<C> extends CommandArgument<C, Long> {
 
     public static final class LongParseException extends NumberParseException {
 
+        private static final long serialVersionUID = 4366856282301198232L;
+
         /**
          * Construct a new long parse exception
          *

cloud-core/src/main/java/cloud/commandframework/arguments/standard/ShortArgument.java

@@ -127,7 +127,7 @@ public final class ShortArgument<C> extends CommandArgument<C, Short> {
         private short min = Short.MIN_VALUE;
         private short max = Short.MAX_VALUE;
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Short.class, name);
         }
 
@@ -253,6 +253,8 @@ public final class ShortArgument<C> extends CommandArgument<C, Short> {
 
     public static final class ShortParseException extends NumberParseException {
 
+        private static final long serialVersionUID = -478674263339091032L;
+
         /**
          * Construct a new short parse exception
          *

cloud-core/src/main/java/cloud/commandframework/arguments/standard/StringArgument.java

@@ -197,7 +197,7 @@ public final class StringArgument<C> extends CommandArgument<C, String> {
         private StringMode stringMode = StringMode.SINGLE;
         private BiFunction<CommandContext<C>, String, List<String>> suggestionsProvider = (v1, v2) -> Collections.emptyList();
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(String.class, name);
         }
 
@@ -248,6 +248,7 @@ public final class StringArgument<C> extends CommandArgument<C, String> {
          * @param suggestionsProvider Suggestions provider
          * @return Builder instance
          */
+        @Override
         public @NonNull Builder<C> withSuggestionsProvider(
                 final @NonNull BiFunction<@NonNull CommandContext<C>,
                         @NonNull String, @NonNull List<@NonNull String>> suggestionsProvider
@@ -410,6 +411,7 @@ public final class StringArgument<C> extends CommandArgument<C, String> {
 
     public static final class StringParseException extends ParserException {
 
+        private static final long serialVersionUID = -8903115465005472945L;
         private final String input;
         private final StringMode stringMode;
 

cloud-core/src/main/java/cloud/commandframework/arguments/standard/UUIDArgument.java

@@ -103,7 +103,7 @@ public final class UUIDArgument<C> extends CommandArgument<C, UUID> {
 
     public static final class Builder<C> extends CommandArgument.Builder<C, UUID> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(UUID.class, name);
         }
 
@@ -154,6 +154,7 @@ public final class UUIDArgument<C> extends CommandArgument<C, UUID> {
 
     public static final class UUIDParseException extends ParserException {
 
+        private static final long serialVersionUID = 6399602590976540023L;
         private final String input;
 
         /**

cloud-core/src/main/java/cloud/commandframework/context/CommandContext.java

@@ -140,7 +140,7 @@ public final class CommandContext<C> {
     public <T> @NonNull Optional<T> getOptional(final @NonNull String key) {
         final Object value = this.internalStorage.get(key);
         if (value != null) {
-            @SuppressWarnings("ALL") final T castedValue = (T) value;
+            @SuppressWarnings("unchecked") final T castedValue = (T) value;
             return Optional.of(castedValue);
         } else {
             return Optional.empty();
@@ -155,10 +155,11 @@ public final class CommandContext<C> {
      * @param <T>      Value type
      * @return Value
      */
+    @SuppressWarnings("unused")
     public <T> @NonNull Optional<T> getOptional(final @NonNull CommandArgument<C, T> argument) {
         final Object value = this.internalStorage.get(argument.getName());
         if (value != null) {
-            @SuppressWarnings("ALL") final T castedValue = (T) value;
+            @SuppressWarnings("unchecked") final T castedValue = (T) value;
             return Optional.of(castedValue);
         } else {
             return Optional.empty();
@@ -183,7 +184,7 @@ public final class CommandContext<C> {
      * @return Argument
      * @throws NullPointerException If no such argument is stored
      */
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings({"unchecked", "TypeParameterUnusedInFormals"})
     public <T> @NonNull T get(final @NonNull String key) {
         final Object value = this.internalStorage.get(key);
         if (value == null) {

cloud-core/src/main/java/cloud/commandframework/exceptions/AmbiguousNodeException.java

@@ -40,6 +40,7 @@ import java.util.List;
 @SuppressWarnings("unused")
 public final class AmbiguousNodeException extends IllegalStateException {
 
+    private static final long serialVersionUID = -200207173805584709L;
     private final CommandArgument<?, ?> parentNode;
     private final CommandArgument<?, ?> ambiguousNode;
     private final List<CommandArgument<?, ?>> children;

cloud-core/src/main/java/cloud/commandframework/exceptions/ArgumentParseException.java

@@ -30,6 +30,7 @@ import java.util.List;
 
 public class ArgumentParseException extends CommandParseException {
 
+    private static final long serialVersionUID = -4385446899439587461L;
     private final Throwable cause;
 
     /**
@@ -53,7 +54,8 @@ public class ArgumentParseException extends CommandParseException {
      *
      * @return Cause
      */
-    public @NonNull Throwable getCause() {
+    @Override
+    public synchronized @NonNull Throwable getCause() {
         return this.cause;
     }
 

cloud-core/src/main/java/cloud/commandframework/exceptions/CommandParseException.java

@@ -35,6 +35,7 @@ import java.util.List;
 @SuppressWarnings("unused")
 public class CommandParseException extends IllegalArgumentException {
 
+    private static final long serialVersionUID = -2415981126382517435L;
     private final Object commandSender;
     private final List<CommandArgument<?, ?>> currentChain;
 

cloud-core/src/main/java/cloud/commandframework/exceptions/InvalidCommandSenderException.java

@@ -33,6 +33,7 @@ import java.util.List;
  */
 public final class InvalidCommandSenderException extends CommandParseException {
 
+    private static final long serialVersionUID = 7372142477529875598L;
     private final Class<?> requiredSender;
 
     /**

cloud-core/src/main/java/cloud/commandframework/exceptions/InvalidSyntaxException.java

@@ -34,6 +34,7 @@ import java.util.List;
 @SuppressWarnings("unused")
 public class InvalidSyntaxException extends CommandParseException {
 
+    private static final long serialVersionUID = -4183356059293785202L;
     private final String correctSyntax;
 
     /**

cloud-core/src/main/java/cloud/commandframework/exceptions/NoCommandInLeafException.java

@@ -34,6 +34,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 @SuppressWarnings("unused")
 public final class NoCommandInLeafException extends IllegalStateException {
 
+    private static final long serialVersionUID = 3373529875213310821L;
     private final CommandArgument<?, ?> commandArgument;
 
     /**

cloud-core/src/main/java/cloud/commandframework/exceptions/NoPermissionException.java

@@ -37,6 +37,7 @@ import java.util.List;
 @SuppressWarnings("unused")
 public class NoPermissionException extends CommandParseException {
 
+    private static final long serialVersionUID = 7103413337750692843L;
     private final CommandPermission missingPermission;
 
     /**

cloud-core/src/main/java/cloud/commandframework/exceptions/NoSuchCommandException.java

@@ -35,6 +35,7 @@ import java.util.List;
 @SuppressWarnings("unused")
 public final class NoSuchCommandException extends CommandParseException {
 
+    private static final long serialVersionUID = -7775865652882764771L;
     private final String suppliedCommand;
 
     /**

cloud-core/src/main/java/cloud/commandframework/exceptions/parsing/NoInputProvidedException.java

@@ -34,6 +34,8 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  */
 public class NoInputProvidedException extends ParserException {
 
+    private static final long serialVersionUID = 3485754951593709559L;
+
     /**
      * Construct a new NoInputProvidedException
      *

cloud-core/src/main/java/cloud/commandframework/exceptions/parsing/NumberParseException.java

@@ -30,6 +30,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 
 public abstract class NumberParseException extends ParserException {
 
+    private static final long serialVersionUID = 3018775374056029797L;
     private final String input;
     private final Number min;
     private final Number max;
@@ -43,7 +44,7 @@ public abstract class NumberParseException extends ParserException {
      * @param parserClass Parser class
      * @param context     Command context
      */
-    public NumberParseException(
+    protected NumberParseException(
             final @NonNull String input,
             final @NonNull Number min,
             final @NonNull Number max,

cloud-core/src/main/java/cloud/commandframework/exceptions/parsing/ParserException.java

@@ -30,6 +30,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 
 public class ParserException extends IllegalArgumentException {
 
+    private static final long serialVersionUID = -4409795575435072170L;
     private final Class<?> argumentParser;
     private final CommandContext<?> context;
     private final Caption errorCaption;

cloud-core/src/main/java/cloud/commandframework/execution/CommandExecutionCoordinator.java

@@ -31,6 +31,7 @@ import cloud.commandframework.types.tuples.Pair;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
+import java.util.Objects;
 import java.util.Queue;
 import java.util.concurrent.CompletableFuture;
 import java.util.function.Function;
@@ -52,7 +53,7 @@ public abstract class CommandExecutionCoordinator<C> {
      *
      * @param commandTree Command tree
      */
-    public CommandExecutionCoordinator(final @NonNull CommandTree<C> commandTree) {
+    protected CommandExecutionCoordinator(final @NonNull CommandTree<C> commandTree) {
         this.commandTree = commandTree;
     }
 
@@ -113,7 +114,7 @@ public abstract class CommandExecutionCoordinator<C> {
                 if (pair.getSecond() != null) {
                     completableFuture.completeExceptionally(pair.getSecond());
                 } else {
-                    final Command<C> command = pair.getFirst();
+                    final Command<C> command = Objects.requireNonNull(pair.getFirst());
                     if (this.getCommandTree().getCommandManager().postprocessContext(commandContext, command) == State.ACCEPTED) {
                         command.getCommandExecutionHandler().execute(commandContext);
                     }

cloud-core/src/main/java/cloud/commandframework/permission/OrPermission.java

@@ -25,9 +25,11 @@ package cloud.commandframework.permission;
 
 import org.checkerframework.checker.nullness.qual.NonNull;
 
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
+import java.util.List;
 import java.util.Objects;
 import java.util.Set;
 
@@ -84,7 +86,9 @@ public final class OrPermission implements CommandPermission {
             return false;
         }
         final OrPermission that = (OrPermission) o;
-        return Objects.equals(getPermissions(), that.getPermissions());
+        final List<CommandPermission> local = new ArrayList<>(this.getPermissions());
+        final List<CommandPermission> foreign = new ArrayList<>(that.getPermissions());
+        return local.equals(foreign);
     }
 
     @Override

cloud-core/src/test/java/cloud/commandframework/ParserRegistryTest.java

@@ -36,6 +36,7 @@ import org.junit.jupiter.api.Test;
 
 import java.lang.annotation.Annotation;
 import java.util.Collections;
+import java.util.Objects;
 
 public class ParserRegistryTest {
 
@@ -61,6 +62,20 @@ public class ParserRegistryTest {
             public String max() {
                 return Integer.toString(RANGE_MAX);
             }
+
+            @Override
+            public boolean equals(final Object obj) {
+               if (!(obj instanceof Range)) {
+                   return false;
+               }
+               final Range range = (Range) obj;
+               return this.min().equals(range.min()) && this.max().equals(range.max());
+            }
+
+            @Override
+            public int hashCode() {
+                return Objects.hash(this.min(), this.max());
+            }
         };
 
 

cloud-discord/cloud-javacord/src/main/java/cloud/commandframework/javacord/JavacordCommand.java

@@ -46,19 +46,17 @@ public class JavacordCommand<C> implements MessageCreateListener {
 
     private final JavacordCommandManager<C> manager;
     private final CommandArgument<C, ?> command;
-    private final cloud.commandframework.Command<C> cloudCommand;
 
     JavacordCommand(
-            final cloud.commandframework.@NonNull Command<C> cloudCommand,
             final @NonNull CommandArgument<C, ?> command,
             final @NonNull JavacordCommandManager<C> manager
     ) {
         this.command = command;
         this.manager = manager;
-        this.cloudCommand = cloudCommand;
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public final void onMessageCreate(final @NonNull MessageCreateEvent event) {
         MessageAuthor messageAuthor = event.getMessageAuthor();
 
@@ -85,7 +83,6 @@ public class JavacordCommand<C> implements MessageCreateListener {
         messageContent = messageContent.replaceFirst(commandPrefix, "");
 
         final String finalContent = messageContent;
-        //noinspection unchecked
         if (((StaticArgument<C>) command).getAliases()
                 .stream()
                 .map(String::toLowerCase)
@@ -94,7 +91,7 @@ public class JavacordCommand<C> implements MessageCreateListener {
         }
 
         manager.executeCommand(sender, finalContent)
-                .whenComplete(((commandResult, throwable) -> {
+                .whenComplete((commandResult, throwable) -> {
                     if (throwable == null) {
                         return;
                     }
@@ -158,7 +155,7 @@ public class JavacordCommand<C> implements MessageCreateListener {
 
                     commandSender.sendErrorMessage(throwable.getMessage());
                     throwable.printStackTrace();
-                }));
+                });
     }
 
 }

cloud-discord/cloud-javacord/src/main/java/cloud/commandframework/javacord/JavacordCommandManager.java

@@ -57,8 +57,8 @@ public class JavacordCommandManager<C> extends CommandManager<C> {
      * @param backwardsCommandSenderMapper Function that maps the command sender type to {@link Object}
      * @param commandPrefixMapper          Function that maps the command sender type to the command prefix
      * @param commandPermissionMapper      Function used to check if a command sender has the permission to execute a command
-     * @throws Exception If the construction of the manager fails
      */
+    @SuppressWarnings("unchecked")
     public JavacordCommandManager(
             final @NonNull DiscordApi discordApi,
             final @NonNull Function<@NonNull CommandTree<C>,
@@ -69,8 +69,7 @@ public class JavacordCommandManager<C> extends CommandManager<C> {
             final @NonNull Function<@NonNull C, @NonNull String> commandPrefixMapper,
             final @Nullable BiFunction<@NonNull C,
                     @NonNull String, @NonNull Boolean> commandPermissionMapper
-    )
+    ) {
-            throws Exception {
         super(commandExecutionCoordinator, new JavacordRegistrationHandler<>());
         ((JavacordRegistrationHandler<C>) this.getCommandRegistrationHandler()).initialize(this);
         this.discordApi = discordApi;

cloud-discord/cloud-javacord/src/main/java/cloud/commandframework/javacord/JavacordRegistrationHandler.java

@@ -52,7 +52,6 @@ final class JavacordRegistrationHandler<C> implements CommandRegistrationHandler
             return false;
         }
         @SuppressWarnings("unchecked") final JavacordCommand<C> javacordCommand = new JavacordCommand<>(
-                (Command<C>) command,
                 (CommandArgument<C, ?>) commandArgument,
                 this.javacordCommandManager
         );

cloud-discord/cloud-jda/src/main/java/cloud/commandframework/jda/JDA4CommandManager.java

@@ -25,20 +25,20 @@ package cloud.commandframework.jda;
 
 import cloud.commandframework.CommandTree;
 import cloud.commandframework.execution.CommandExecutionCoordinator;
-
-import java.util.function.BiFunction;
-import java.util.function.Function;
-
 import net.dv8tion.jda.api.JDA;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
+import java.util.function.BiFunction;
+import java.util.function.Function;
+
 /**
  * Command manager for use with JDA 4
  *
  * @param <C> Command sender type
  * @since 1.1.0
  */
+@SuppressWarnings("deprecation")
 public class JDA4CommandManager<C> extends JDACommandManager<C> {
 
     /**

cloud-discord/cloud-jda/src/main/java/cloud/commandframework/jda/JDACommandListener.java

@@ -38,6 +38,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  *
  * @param <C> Command sender type
  */
+@SuppressWarnings("deprecation")
 public class JDACommandListener<C> extends ListenerAdapter {
 
     private static final String MESSAGE_INVALID_SYNTAX = "Invalid Command Syntax. Correct command syntax is: ";
@@ -59,7 +60,6 @@ public class JDACommandListener<C> extends ListenerAdapter {
     @Override
     public final void onMessageReceived(final @NonNull MessageReceivedEvent event) {
         final Message message = event.getMessage();
-        final JDACommandSender jdaCommandSender = JDACommandSender.of(event);
         final C sender = this.commandManager.getCommandSenderMapper().apply(event);
 
         if (this.commandManager.getBotId() == event.getAuthor().getIdLong()) {
@@ -84,13 +84,11 @@ public class JDACommandListener<C> extends ListenerAdapter {
                     if (throwable instanceof InvalidSyntaxException) {
                         this.commandManager.handleException(sender,
                                 InvalidSyntaxException.class,
-                                (InvalidSyntaxException) throwable, (c, e) -> {
+                                (InvalidSyntaxException) throwable, (c, e) -> this.sendMessage(
-                                    this.sendMessage(
+                                        event,
-                                            event,
+                                        MESSAGE_INVALID_SYNTAX + prefix + ((InvalidSyntaxException) throwable)
-                                            MESSAGE_INVALID_SYNTAX + prefix + ((InvalidSyntaxException) throwable)
+                                                .getCorrectSyntax()
-                                                    .getCorrectSyntax()
+                                )
-                                    );
-                                }
                         );
                     } else if (throwable instanceof InvalidCommandSenderException) {
                         this.commandManager.handleException(sender,
@@ -112,13 +110,11 @@ public class JDACommandListener<C> extends ListenerAdapter {
                         );
                     } else if (throwable instanceof ArgumentParseException) {
                         this.commandManager.handleException(sender, ArgumentParseException.class,
-                                (ArgumentParseException) throwable, (c, e) -> {
+                                (ArgumentParseException) throwable, (c, e) -> this.sendMessage(
-                                    this.sendMessage(
+                                        event,
-                                            event,
+                                        "Invalid Command Argument: " + throwable.getCause()
-                                            "Invalid Command Argument: " + throwable.getCause()
+                                                .getMessage()
-                                                    .getMessage()
+                                )
-                                    );
-                                }
                         );
                     } else {
                         this.sendMessage(event, throwable.getMessage());

cloud-discord/cloud-jda/src/main/java/cloud/commandframework/jda/JDACommandPreprocessor.java

@@ -31,8 +31,9 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  * Command preprocessor which decorates incoming {@link cloud.commandframework.context.CommandContext}
  * with Bukkit specific objects
  *
- * @param <C>
+ * @param <C> Command sender type
  */
+@SuppressWarnings("deprecation")
 final class JDACommandPreprocessor<C> implements CommandPreprocessor<C> {
 
     private final JDACommandManager<C> mgr;

cloud-discord/cloud-jda/src/main/java/cloud/commandframework/jda/parsers/ChannelArgument.java

@@ -110,7 +110,7 @@ public final class ChannelArgument<C> extends CommandArgument<C, MessageChannel>
 
         private List<ParserMode> modes = new ArrayList<>();
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(MessageChannel.class, name);
         }
 
@@ -228,6 +228,7 @@ public final class ChannelArgument<C> extends CommandArgument<C, MessageChannel>
 
     public static class ChannelParseException extends IllegalArgumentException {
 
+        private static final long serialVersionUID = 2724288304060572202L;
         private final String input;
 
         /**
@@ -253,6 +254,8 @@ public final class ChannelArgument<C> extends CommandArgument<C, MessageChannel>
 
     public static final class TooManyChannelsFoundParseException extends ChannelParseException {
 
+        private static final long serialVersionUID = -507783063742841507L;
+
         /**
          * Construct a new channel parse exception
          *
@@ -272,6 +275,8 @@ public final class ChannelArgument<C> extends CommandArgument<C, MessageChannel>
 
     public static final class ChannelNotFoundException extends ChannelParseException {
 
+        private static final long serialVersionUID = -8299458048947528494L;
+
         /**
          * Construct a new channel parse exception
          *

cloud-discord/cloud-jda/src/main/java/cloud/commandframework/jda/parsers/UserArgument.java

@@ -111,7 +111,7 @@ public final class UserArgument<C> extends CommandArgument<C, User> {
 
         private Set<ParserMode> modes = new HashSet<>();
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(User.class, name);
         }
 
@@ -244,6 +244,7 @@ public final class UserArgument<C> extends CommandArgument<C, User> {
 
     public static class UserParseException extends IllegalArgumentException {
 
+        private static final long serialVersionUID = -6728909884195850077L;
         private final String input;
 
         /**
@@ -269,6 +270,8 @@ public final class UserArgument<C> extends CommandArgument<C, User> {
 
     public static final class TooManyUsersFoundParseException extends UserParseException {
 
+        private static final long serialVersionUID = 7222089412615886672L;
+
         /**
          * Construct a new user parse exception
          *
@@ -288,6 +291,8 @@ public final class UserArgument<C> extends CommandArgument<C, User> {
 
     public static final class UserNotFoundParseException extends UserParseException {
 
+        private static final long serialVersionUID = 3689949065073643826L;
+
         /**
          * Construct a new user parse exception
          *

cloud-irc/cloud-pircbotx/src/main/java/cloud/commandframework/pircbotx/arguments/UserArgument.java

@@ -159,6 +159,8 @@ public final class UserArgument<C> extends CommandArgument<C, User> {
 
     public static final class UserParseException extends ParserException {
 
+        private static final long serialVersionUID = -1758590697299611905L;
+
         private UserParseException(
                 final @NonNull CommandContext<?> context,
                 final @NonNull String input

cloud-minecraft/cloud-brigadier/src/main/java/cloud/commandframework/brigadier/CloudBrigadierManager.java

@@ -80,6 +80,7 @@ import java.util.function.Supplier;
  * @param <C> Command sender type
  * @param <S> Brigadier sender type
  */
+@SuppressWarnings({"unchecked", "rawtypes"})
 public final class CloudBrigadierManager<C, S> {
 
     private final Map<Class<?>, Pair<Function<? extends ArgumentParser<C, ?>, ? extends ArgumentType<?>>, Boolean>> mappers;
@@ -232,7 +233,7 @@ public final class CloudBrigadierManager<C, S> {
         final ArgumentParser<C, ?> commandArgument = (ArgumentParser<C, ?>) argument;
         final Pair pair = this.mappers.get(GenericTypeReflector.erase(argumentType.getType()));
         if (pair == null || pair.getFirst() == null) {
-            return this.createDefaultMapper(valueType, commandArgument);
+            return this.createDefaultMapper(valueType);
         }
         return Pair.of(
                 (ArgumentType<?>) ((Function) pair.getFirst()).apply(commandArgument),
@@ -241,8 +242,7 @@ public final class CloudBrigadierManager<C, S> {
     }
 
     private <T, K extends ArgumentParser<C, T>> @NonNull Pair<@NonNull ArgumentType<?>, @NonNull Boolean> createDefaultMapper(
-            final @NonNull TypeToken<?> clazz,
+            final @NonNull TypeToken<?> clazz
-            final @NonNull ArgumentParser<C, T> argument
     ) {
         final Supplier<ArgumentType<?>> argumentTypeSupplier = this.defaultArgumentTypeSuppliers
                 .get(GenericTypeReflector.erase(clazz.getType()));
@@ -278,7 +278,7 @@ public final class CloudBrigadierManager<C, S> {
     ) {
         final CommandTree.Node<CommandArgument<C, ?>> node = this.commandManager
                 .getCommandTree().getNamedNode(cloudCommand.getArguments().get(0).getName());
-        final SuggestionProvider<S> provider = (context, builder) -> this.buildSuggestions(node.getValue(), context, builder);
+        final SuggestionProvider<S> provider = (context, builder) -> this.buildSuggestions(node.getValue(), builder);
         final LiteralArgumentBuilder<S> literalArgumentBuilder = LiteralArgumentBuilder
                 .<S>literal(label)
                 .requires(sender -> permissionChecker.test(sender, (CommandPermission) node.getNodeMeta()
@@ -375,7 +375,7 @@ public final class CloudBrigadierManager<C, S> {
                         ));
                 argumentBuilders[i] = fragmentBuilder;
 
-                if (forceExecutor || (i == parsers.length - 1) && (root.isLeaf() || !root.getValue().isRequired())) {
+                if (forceExecutor || ((i == parsers.length - 1) && (root.isLeaf() || !root.getValue().isRequired()))) {
                     fragmentBuilder.executes(executor);
                 }
 
@@ -410,7 +410,7 @@ public final class CloudBrigadierManager<C, S> {
             final SuggestionProvider<S> provider = pair.getSecond()
                     ? null
                     : (context, builder) -> this.buildSuggestions(root.getValue(),
-                            context, builder
+                            builder
                     );
             argumentBuilder = RequiredArgumentBuilder
                     .<S, Object>argument(root.getValue().getName(), (ArgumentType<Object>) pair.getFirst())
@@ -438,7 +438,6 @@ public final class CloudBrigadierManager<C, S> {
 
     private @NonNull CompletableFuture<Suggestions> buildSuggestions(
             final @NonNull CommandArgument<C, ?> argument,
-            final com.mojang.brigadier.context.@NonNull CommandContext<S> s,
             final @NonNull SuggestionsBuilder builder
     ) {
         final CommandContext<C> commandContext = this.dummyContextProvider.get();

cloud-minecraft/cloud-bukkit/build.gradle

@@ -4,4 +4,6 @@ dependencies {
     api project(':cloud-tasks')
     compileOnly "org.bukkit:bukkit:${vers['bukkit']}"
     compileOnly "me.lucko:commodore:${vers['commodore']}"
+    compileOnly "org.jetbrains:annotations:${vers['jb-annotations']}"
+    compileOnly "com.google.guava:guava:${vers['guava']}"
 }

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitBrigadierMapper.java

@@ -45,6 +45,7 @@ import java.util.logging.Level;
  *
  * @param <C> Command sender type
  */
+@SuppressWarnings({"unchecked", "rawtypes"})
 public final class BukkitBrigadierMapper<C> {
 
     private static final int UUID_ARGUMENT_VERSION = 16;
@@ -115,6 +116,7 @@ public final class BukkitBrigadierMapper<C> {
         };
     }
 
+    @SuppressWarnings("UnnecessaryLambda")
     private Supplier<ArgumentType<?>> getArgumentVec3() {
         return () -> {
             try {
@@ -152,7 +154,7 @@ public final class BukkitBrigadierMapper<C> {
         try {
             this.brigadierManager.registerDefaultArgumentTypeSupplier(type, () -> {
                 try {
-                    return (ArgumentType<?>) constructor.newInstance();
+                    return constructor.newInstance();
                 } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
                     e.printStackTrace();
                 }

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitCommand.java

@@ -88,7 +88,7 @@ final class BukkitCommand<C> extends org.bukkit.command.Command implements Plugi
                 sender,
                 builder.toString()
         )
-                .whenComplete(((commandResult, throwable) -> {
+                .whenComplete((commandResult, throwable) -> {
                     if (throwable != null) {
                         if (throwable instanceof CompletionException) {
                             throwable = throwable.getCause();
@@ -138,7 +138,7 @@ final class BukkitCommand<C> extends org.bukkit.command.Command implements Plugi
                             throwable.printStackTrace();
                         }
                     }
-                }));
+                });
         return true;
     }
 

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitCommandManager.java

@@ -79,7 +79,6 @@ public class BukkitCommandManager<C> extends CommandManager<C> {
     private final Function<CommandSender, C> commandSenderMapper;
     private final Function<C, CommandSender> backwardsCommandSenderMapper;
 
-    private final BukkitSynchronizer bukkitSynchronizer;
     private final TaskFactory taskFactory;
 
     private boolean splitAliases = false;
@@ -109,6 +108,7 @@ public class BukkitCommandManager<C> extends CommandManager<C> {
      * @param backwardsCommandSenderMapper Function that maps the command sender type to {@link CommandSender}
      * @throws Exception If the construction of the manager fails
      */
+    @SuppressWarnings("unchecked")
     public BukkitCommandManager(
             final @NonNull Plugin owningPlugin,
             final @NonNull Function<@NonNull CommandTree<C>,
@@ -123,8 +123,8 @@ public class BukkitCommandManager<C> extends CommandManager<C> {
         this.commandSenderMapper = commandSenderMapper;
         this.backwardsCommandSenderMapper = backwardsCommandSenderMapper;
 
-        this.bukkitSynchronizer = new BukkitSynchronizer(owningPlugin);
+        final BukkitSynchronizer bukkitSynchronizer = new BukkitSynchronizer(owningPlugin);
-        this.taskFactory = new TaskFactory(this.bukkitSynchronizer);
+        this.taskFactory = new TaskFactory(bukkitSynchronizer);
 
         /* Try to determine the Minecraft version */
         int version = -1;
@@ -148,6 +148,7 @@ public class BukkitCommandManager<C> extends CommandManager<C> {
             Class.forName("com.destroystokyo.paper.PaperConfig");
             paper = true;
         } catch (final Exception ignored) {
+            // This is fine
         }
         this.paper = paper;
 
@@ -183,7 +184,7 @@ public class BukkitCommandManager<C> extends CommandManager<C> {
                 this.owningPlugin
         );
 
-        this.registerDefaultCaptions(new BukkitCaptionRegistryFactory<C>().create());
+        this.setCaptionRegistry(new BukkitCaptionRegistryFactory<C>().create());
     }
 
     /**
@@ -363,6 +364,7 @@ public class BukkitCommandManager<C> extends CommandManager<C> {
 
     public static final class BrigadierFailureException extends IllegalStateException {
 
+        private static final long serialVersionUID = 7816660840063155703L;
         private final BrigadierFailureReason reason;
 
         /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitCommandPreprocessor.java

@@ -31,7 +31,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  * Command preprocessor which decorates incoming {@link cloud.commandframework.context.CommandContext}
  * with Bukkit specific objects
  *
- * @param <C>
+ * @param <C> Command sender type
  */
 final class BukkitCommandPreprocessor<C> implements CommandPreprocessor<C> {
 

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitCommandSender.java

@@ -29,7 +29,6 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 
 /**
  * Command sender that proxies {@link org.bukkit.command.CommandSender}
- * {@inheritDoc}
  */
 public abstract class BukkitCommandSender {
 
@@ -40,7 +39,7 @@ public abstract class BukkitCommandSender {
      *
      * @param internalSender Bukkit command sender
      */
-    public BukkitCommandSender(final org.bukkit.command.@NonNull CommandSender internalSender) {
+    protected BukkitCommandSender(final org.bukkit.command.@NonNull CommandSender internalSender) {
         this.internalSender = internalSender;
     }
 

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitPluginRegistrationHandler.java

@@ -61,7 +61,7 @@ public class BukkitPluginRegistrationHandler<C> implements CommandRegistrationHa
         this.commandMap = (CommandMap) getCommandMap.invoke(Bukkit.getServer());
         final Field knownCommands = SimpleCommandMap.class.getDeclaredField("knownCommands");
         knownCommands.setAccessible(true);
-        @SuppressWarnings("ALL") final Map<String, org.bukkit.command.Command> bukkitCommands =
+        @SuppressWarnings("unchecked") final Map<String, org.bukkit.command.Command> bukkitCommands =
                 (Map<String, org.bukkit.command.Command>) knownCommands.get(commandMap);
         this.bukkitCommands = bukkitCommands;
         this.bukkitCommandManager = bukkitCommandManager;
@@ -83,7 +83,7 @@ public class BukkitPluginRegistrationHandler<C> implements CommandRegistrationHa
 
         @SuppressWarnings("unchecked") final BukkitCommand<C> bukkitCommand = new BukkitCommand<>(
                 label,
-                (this.bukkitCommandManager.getSplitAliases() ? Collections.<String>emptyList() : aliases),
+                (this.bukkitCommandManager.getSplitAliases() ? Collections.emptyList() : aliases),
                 (Command<C>) command,
                 (CommandArgument<C, ?>) commandArgument,
                 this.bukkitCommandManager

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/CloudCommodoreManager.java

@@ -38,7 +38,7 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 
 import java.util.Collections;
 
-@SuppressWarnings("ALL")
+@SuppressWarnings({"unchecked", "rawtypes"})
 class CloudCommodoreManager<C> extends BukkitPluginRegistrationHandler<C> {
 
     private final BukkitCommandManager<C> commandManager;
@@ -77,7 +77,7 @@ class CloudCommodoreManager<C> extends BukkitPluginRegistrationHandler<C> {
     ) {
         final com.mojang.brigadier.Command<?> cmd = o -> 1;
         final LiteralCommandNode<?> literalCommandNode = this.brigadierManager
-                .<Object>createLiteralCommandNode(label, command, (o, p) -> {
+                .createLiteralCommandNode(label, command, (o, p) -> {
                     final CommandSender sender = this.commodore.getBukkitSender(o);
                     return this.commandManager.hasPermission(
                             this.commandManager.getCommandSenderMapper().apply(sender),

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/arguments/selector/EntitySelector.java

@@ -43,7 +43,7 @@ public abstract class EntitySelector {
      * @param selector The input string used to create this selector
      * @param entities The List of Bukkit {@link Entity entities} to construct the {@link EntitySelector} from
      */
-    public EntitySelector(
+    protected EntitySelector(
             final @NonNull String selector,
             final @NonNull List<@NonNull Entity> entities
     ) {

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/EnchantmentArgument.java

@@ -108,7 +108,7 @@ public class EnchantmentArgument<C> extends CommandArgument<C, Enchantment> {
 
     public static final class Builder<C> extends CommandArgument.Builder<C, Enchantment> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Enchantment.class, name);
         }
 
@@ -127,6 +127,7 @@ public class EnchantmentArgument<C> extends CommandArgument<C, Enchantment> {
     public static final class EnchantmentParser<C> implements ArgumentParser<C, Enchantment> {
 
         @Override
+        @SuppressWarnings("deprecation")
         public @NonNull ArgumentParseResult<Enchantment> parse(
                 final @NonNull CommandContext<C> commandContext,
                 final @NonNull Queue<@NonNull String> inputQueue
@@ -142,7 +143,6 @@ public class EnchantmentArgument<C> extends CommandArgument<C, Enchantment> {
             final NamespacedKey key;
             if (input.contains(":")) {
                 final String[] splitInput = input.split(":");
-                //noinspection deprecation
                 key = new NamespacedKey(splitInput[0], splitInput[1]);
             } else {
                 key = NamespacedKey.minecraft(input);
@@ -177,6 +177,7 @@ public class EnchantmentArgument<C> extends CommandArgument<C, Enchantment> {
 
     public static final class EnchantmentParseException extends ParserException {
 
+        private static final long serialVersionUID = 1415174766296065151L;
         private final String input;
 
         /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/MaterialArgument.java

@@ -107,7 +107,7 @@ public class MaterialArgument<C> extends CommandArgument<C, Material> {
 
     public static final class Builder<C> extends CommandArgument.Builder<C, Material> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Material.class, name);
         }
 
@@ -164,6 +164,7 @@ public class MaterialArgument<C> extends CommandArgument<C, Material> {
 
     public static final class MaterialParseException extends ParserException {
 
+        private static final long serialVersionUID = 1615554107385965610L;
         private final String input;
 
         /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/OfflinePlayerArgument.java

@@ -114,7 +114,7 @@ public final class OfflinePlayerArgument<C> extends CommandArgument<C, OfflinePl
 
     public static final class Builder<C> extends CommandArgument.Builder<C, OfflinePlayer> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(OfflinePlayer.class, name);
         }
 
@@ -136,6 +136,7 @@ public final class OfflinePlayerArgument<C> extends CommandArgument<C, OfflinePl
     public static final class OfflinePlayerParser<C> implements ArgumentParser<C, OfflinePlayer> {
 
         @Override
+        @SuppressWarnings("deprecation")
         public @NonNull ArgumentParseResult<OfflinePlayer> parse(
                 final @NonNull CommandContext<C> commandContext,
                 final @NonNull Queue<String> inputQueue
@@ -149,10 +150,9 @@ public final class OfflinePlayerArgument<C> extends CommandArgument<C, OfflinePl
             }
             inputQueue.remove();
 
-            //noinspection deprecation
+            final OfflinePlayer player = Bukkit.getOfflinePlayer(input);
-            OfflinePlayer player = Bukkit.getOfflinePlayer(input);
 
-            if (player == null || (!player.hasPlayedBefore() && !player.isOnline())) {
+            if (!player.hasPlayedBefore() && !player.isOnline()) {
                 return ArgumentParseResult.failure(new OfflinePlayerParseException(input, commandContext));
             }
 
@@ -181,6 +181,7 @@ public final class OfflinePlayerArgument<C> extends CommandArgument<C, OfflinePl
      */
     public static final class OfflinePlayerParseException extends ParserException {
 
+        private static final long serialVersionUID = 7632293268451349508L;
         private final String input;
 
         /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/PlayerArgument.java

@@ -110,7 +110,7 @@ public final class PlayerArgument<C> extends CommandArgument<C, Player> {
 
     public static final class Builder<C> extends CommandArgument.Builder<C, Player> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(Player.class, name);
         }
 
@@ -130,6 +130,7 @@ public final class PlayerArgument<C> extends CommandArgument<C, Player> {
     public static final class PlayerParser<C> implements ArgumentParser<C, Player> {
 
         @Override
+        @SuppressWarnings("deprecation")
         public @NonNull ArgumentParseResult<Player> parse(
                 final @NonNull CommandContext<C> commandContext,
                 final @NonNull Queue<@NonNull String> inputQueue
@@ -143,7 +144,6 @@ public final class PlayerArgument<C> extends CommandArgument<C, Player> {
             }
             inputQueue.remove();
 
-            //noinspection deprecation
             Player player = Bukkit.getPlayer(input);
 
             if (player == null) {
@@ -175,6 +175,7 @@ public final class PlayerArgument<C> extends CommandArgument<C, Player> {
      */
     public static final class PlayerParseException extends ParserException {
 
+        private static final long serialVersionUID = 927476591631527552L;
         private final String input;
 
         /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/WorldArgument.java

@@ -108,7 +108,7 @@ public class WorldArgument<C> extends CommandArgument<C, World> {
 
     public static final class Builder<C> extends CommandArgument.Builder<C, World> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(World.class, name);
         }
 
@@ -154,6 +154,7 @@ public class WorldArgument<C> extends CommandArgument<C, World> {
 
     public static final class WorldParseException extends ParserException {
 
+        private static final long serialVersionUID = 561648144491587450L;
         private final String input;
 
         /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/location/LocationArgument.java

@@ -289,6 +289,8 @@ public final class LocationArgument<C> extends CommandArgument<C, Location> {
 
     private static class LocationParseException extends ParserException {
 
+        private static final long serialVersionUID = -3261835227265878218L;
+
         protected LocationParseException(
                 final @NonNull CommandContext<?> context,
                 final @NonNull String input

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/selector/MultipleEntitySelectorArgument.java

@@ -105,7 +105,7 @@ public final class MultipleEntitySelectorArgument<C> extends CommandArgument<C,
 
     public static final class Builder<C> extends CommandArgument.Builder<C, MultipleEntitySelector> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(MultipleEntitySelector.class, name);
         }
 

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/selector/MultiplePlayerSelectorArgument.java

@@ -109,7 +109,7 @@ public final class MultiplePlayerSelectorArgument<C> extends CommandArgument<C,
 
     public static final class Builder<C> extends CommandArgument.Builder<C, MultiplePlayerSelector> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(MultiplePlayerSelector.class, name);
         }
 

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/selector/SelectorParseException.java

@@ -35,6 +35,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  */
 public final class SelectorParseException extends ParserException {
 
+    private static final long serialVersionUID = 1900826717897819065L;
     private final String input;
 
     /**

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/selector/SingleEntitySelectorArgument.java

@@ -103,7 +103,7 @@ public final class SingleEntitySelectorArgument<C> extends CommandArgument<C, Si
 
     public static final class Builder<C> extends CommandArgument.Builder<C, SingleEntitySelector> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(SingleEntitySelector.class, name);
         }
 

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/parsers/selector/SinglePlayerSelectorArgument.java

@@ -107,7 +107,7 @@ public final class SinglePlayerSelectorArgument<C> extends CommandArgument<C, Si
 
     public static final class Builder<C> extends CommandArgument.Builder<C, SinglePlayerSelector> {
 
-        protected Builder(final @NonNull String name) {
+        private Builder(final @NonNull String name) {
             super(SinglePlayerSelector.class, name);
         }
 

cloud-minecraft/cloud-bungee/src/main/java/cloud/commandframework/bungee/BungeeCommand.java

@@ -48,7 +48,6 @@ public final class BungeeCommand<C> extends Command implements TabExecutor {
 
     private final BungeeCommandManager<C> manager;
     private final CommandArgument<C, ?> command;
-    private final cloud.commandframework.Command<C> cloudCommand;
 
     @SuppressWarnings("unchecked")
     BungeeCommand(
@@ -63,7 +62,6 @@ public final class BungeeCommand<C> extends Command implements TabExecutor {
         );
         this.command = command;
         this.manager = manager;
-        this.cloudCommand = cloudCommand;
     }
 
     @Override
@@ -78,7 +76,7 @@ public final class BungeeCommand<C> extends Command implements TabExecutor {
                 sender,
                 builder.toString()
         )
-                .whenComplete(((commandResult, throwable) -> {
+                .whenComplete((commandResult, throwable) -> {
                     if (throwable != null) {
                         if (throwable instanceof CompletionException) {
                             throwable = throwable.getCause();
@@ -154,7 +152,7 @@ public final class BungeeCommand<C> extends Command implements TabExecutor {
                             throwable.printStackTrace();
                         }
                     }
-                }));
+                });
     }
 
     @Override

cloud-minecraft/cloud-bungee/src/main/java/cloud/commandframework/bungee/BungeeCommandManager.java

@@ -63,6 +63,7 @@ public class BungeeCommandManager<C> extends CommandManager<C> {
      * @param commandSenderMapper          Function that maps {@link CommandSender} to the command sender type
      * @param backwardsCommandSenderMapper Function that maps the command sender type to {@link CommandSender}
      */
+    @SuppressWarnings("unchecked")
     public BungeeCommandManager(
             final @NonNull Plugin owningPlugin,
             final @NonNull Function<@NonNull CommandTree<C>,

cloud-minecraft/cloud-bungee/src/main/java/cloud/commandframework/bungee/BungeeCommandPreprocessor.java

@@ -31,7 +31,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  * Command preprocessor which decorates incoming {@link cloud.commandframework.context.CommandContext}
  * with Bungee specific objects
  *
- * @param <C>
+ * @param <C> Command sender type
  * @since 1.1.0
  */
 final class BungeeCommandPreprocessor<C> implements CommandPreprocessor<C> {

cloud-minecraft/cloud-bungee/src/main/java/cloud/commandframework/bungee/arguments/PlayerArgument.java

@@ -184,6 +184,8 @@ public final class PlayerArgument<C> extends CommandArgument<C, ProxiedPlayer> {
 
     public static final class PlayerParseException extends ParserException {
 
+        private static final long serialVersionUID = -2685136673577959929L;
+
         private PlayerParseException(
                 final @NonNull String input,
                 final @NonNull CommandContext<?> context

cloud-minecraft/cloud-bungee/src/main/java/cloud/commandframework/bungee/arguments/ServerArgument.java

@@ -172,6 +172,8 @@ public final class ServerArgument<C> extends CommandArgument<C, ServerInfo> {
 
     public static final class ServerParseException extends ParserException {
 
+        private static final long serialVersionUID = -3825941611365494659L;
+
         private ServerParseException(
                 final @NonNull String input,
                 final @NonNull CommandContext<?> context

cloud-minecraft/cloud-cloudburst/src/main/java/cloud/commandframework/cloudburst/CloudburstCommand.java

@@ -48,7 +48,6 @@ final class CloudburstCommand<C> extends PluginCommand<Plugin> {
 
     private final CommandArgument<C, ?> command;
     private final CloudburstCommandManager<C> manager;
-    private final Command<C> cloudCommand;
 
     CloudburstCommand(
             final @NonNull String label,
@@ -64,7 +63,6 @@ final class CloudburstCommand<C> extends PluginCommand<Plugin> {
                 .build());
         this.command = command;
         this.manager = manager;
-        this.cloudCommand = cloudCommand;
     }
 
     @Override
@@ -83,7 +81,7 @@ final class CloudburstCommand<C> extends PluginCommand<Plugin> {
                 sender,
                 builder.toString()
         )
-                .whenComplete(((commandResult, throwable) -> {
+                .whenComplete((commandResult, throwable) -> {
                     if (throwable != null) {
                         if (throwable instanceof CompletionException) {
                             throwable = throwable.getCause();
@@ -131,7 +129,7 @@ final class CloudburstCommand<C> extends PluginCommand<Plugin> {
                             throwable.printStackTrace();
                         }
                     }
-                }));
+                });
         return true;
     }
 

cloud-minecraft/cloud-cloudburst/src/main/java/cloud/commandframework/cloudburst/CloudburstCommandManager.java

@@ -54,6 +54,7 @@ public class CloudburstCommandManager<C> extends CommandManager<C> {
      * @param commandSenderMapper          Function that maps {@link CommandSender} to the command sender type
      * @param backwardsCommandSenderMapper Function that maps the command sender type to {@link CommandSender}
      */
+    @SuppressWarnings("unchecked")
     public CloudburstCommandManager(
             final @NonNull Plugin owningPlugin,
             final @NonNull Function<@NonNull CommandTree<C>,

cloud-minecraft/cloud-cloudburst/src/main/java/cloud/commandframework/cloudburst/CloudburstPluginRegistrationHandler.java

@@ -48,6 +48,7 @@ class CloudburstPluginRegistrationHandler<C> implements CommandRegistrationHandl
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public final boolean registerCommand(final @NonNull Command<?> command) {
         /* We only care about the root command argument */
         final CommandArgument<?, ?> commandArgument = command.getArguments().get(0);

cloud-minecraft/cloud-minecraft-extras/src/main/java/cloud/commandframework/minecraft/extras/MinecraftHelp.java

@@ -588,6 +588,8 @@ public final class MinecraftHelp<C> {
         }
 
         /**
+         * Get the configured primary color
+         *
          * @return The primary color for the color scheme
          */
         public @NonNull TextColor primary() {
@@ -595,6 +597,8 @@ public final class MinecraftHelp<C> {
         }
 
         /**
+         * Get the configured highlight color
+         *
          * @return The primary color used to highlight commands and queries
          */
         public @NonNull TextColor highlight() {
@@ -602,6 +606,8 @@ public final class MinecraftHelp<C> {
         }
 
         /**
+         * Get the configured alternate highlight color
+         *
          * @return The secondary color used to highlight commands and queries
          */
         public @NonNull TextColor alternateHighlight() {
@@ -609,6 +615,8 @@ public final class MinecraftHelp<C> {
         }
 
         /**
+         * Get the configured text color
+         *
          * @return The color used for description text
          */
         public @NonNull TextColor text() {
@@ -616,6 +624,8 @@ public final class MinecraftHelp<C> {
         }
 
         /**
+         * Get the configured accent color
+         *
          * @return The color used for accents and symbols
          */
         public @NonNull TextColor accent() {
@@ -623,6 +633,8 @@ public final class MinecraftHelp<C> {
         }
 
         /**
+         * Create a new {@link HelpColors} instance
+         *
          * @param primary            The primary color for the color scheme
          * @param highlight          The primary color used to highlight commands and queries
          * @param alternateHighlight The secondary color used to highlight commands and queries

cloud-minecraft/cloud-minecraft-extras/src/main/java/cloud/commandframework/minecraft/extras/Pagination.java

@@ -50,7 +50,7 @@ final class Pagination<T> {
         this.outOfRangeRenderer = outOfRangeRenderer;
     }
 
-    public @NonNull List<Component> render(
+    @NonNull List<Component> render(
             final @NonNull List<T> content,
             final int page,
             final int itemsPerPage
@@ -73,7 +73,7 @@ final class Pagination<T> {
 
         renderedContent.add(this.footerRenderer.apply(page, pages));
 
-        return renderedContent;
+        return Collections.unmodifiableList(renderedContent);
     }
 
 }

cloud-minecraft/cloud-minecraft-extras/src/main/java/cloud/commandframework/minecraft/extras/TextColorArgument.java

@@ -218,6 +218,8 @@ public final class TextColorArgument<C> extends CommandArgument<C, TextColor> {
 
     private static final class TextColorParseException extends ParserException {
 
+        private static final long serialVersionUID = -6236625328843879518L;
+
         private TextColorParseException(
                 final @NonNull CommandContext<?> commandContext,
                 final @NonNull String input

cloud-minecraft/cloud-paper/build.gradle

@@ -2,4 +2,6 @@ dependencies {
     api project(':cloud-bukkit')
     compileOnly "com.destroystokyo.paper:paper-api:${vers['paper-api']}"
     compileOnly "com.destroystokyo.paper:paper-mojangapi:${vers['paper-api']}"
+    compileOnly "org.jetbrains:annotations:${vers['jb-annotations']}"
+    compileOnly "com.google.guava:guava:${vers['guava']}"
 }

cloud-minecraft/cloud-paper/src/main/java/cloud/commandframework/paper/PaperBrigadierListener.java

@@ -30,7 +30,6 @@ import cloud.commandframework.bukkit.BukkitBrigadierMapper;
 import cloud.commandframework.context.CommandContext;
 import cloud.commandframework.permission.CommandPermission;
 import com.destroystokyo.paper.brigadier.BukkitBrigadierCommandSource;
-import com.destroystokyo.paper.event.brigadier.CommandRegisteredEvent;
 import org.bukkit.Bukkit;
 import org.bukkit.command.PluginIdentifiableCommand;
 import org.bukkit.event.EventHandler;
@@ -60,7 +59,8 @@ class PaperBrigadierListener<C> implements Listener {
 
     @EventHandler
     @SuppressWarnings("deprecation")
-    public void onCommandRegister(final @NonNull CommandRegisteredEvent<BukkitBrigadierCommandSource> event) {
+    public void onCommandRegister(final com.destroystokyo.paper.event.brigadier
+            .@NonNull CommandRegisteredEvent<BukkitBrigadierCommandSource> event) {
         if (!(event.getCommand() instanceof PluginIdentifiableCommand)) {
             return;
         } else if (!((PluginIdentifiableCommand) event.getCommand())

cloud-minecraft/cloud-velocity/src/main/java/cloud/commandframework/velocity/CloudInjectionModule.java

@@ -68,6 +68,7 @@ public final class CloudInjectionModule<C> extends AbstractModule {
     }
 
     @Override
+    @SuppressWarnings({"unchecked", "rawtypes"})
     protected void configure() {
         final Type commandTreeType = Types.newParameterizedType(CommandTree.class, this.commandSenderType);
         final Type commandExecutionCoordinatorType = Types.newParameterizedType(CommandExecutionCoordinator.class,

cloud-minecraft/cloud-velocity/src/main/java/cloud/commandframework/velocity/VelocityCommandManager.java

@@ -77,6 +77,7 @@ public class VelocityCommandManager<C> extends CommandManager<C> {
      * @param backwardsCommandSenderMapper Function that maps the command sender type to {@link CommandSource}
      */
     @Inject
+    @SuppressWarnings("unchecked")
     public VelocityCommandManager(
             final @NonNull ProxyServer proxyServer,
             final @NonNull Function<@NonNull CommandTree<C>, @NonNull CommandExecutionCoordinator<C>> commandExecutionCoordinator,

cloud-minecraft/cloud-velocity/src/main/java/cloud/commandframework/velocity/VelocityCommandPreprocessor.java

@@ -31,7 +31,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  * Command preprocessor which decorates incoming {@link cloud.commandframework.context.CommandContext}
  * with Velocity specific objects
  *
- * @param <C>
+ * @param <C> Command sender type
  * @since 1.1.0
  */
 final class VelocityCommandPreprocessor<C> implements CommandPreprocessor<C> {

cloud-minecraft/cloud-velocity/src/main/java/cloud/commandframework/velocity/VelocityPluginRegistrationHandler.java

@@ -55,6 +55,7 @@ final class VelocityPluginRegistrationHandler<C> implements CommandRegistrationH
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public boolean registerCommand(final @NonNull Command<?> command) {
         final CommandArgument<?, ?> argument = command.getArguments().get(0);
         final List<String> aliases = ((StaticArgument<C>) argument).getAlternativeAliases();

cloud-minecraft/cloud-velocity/src/main/java/cloud/commandframework/velocity/arguments/PlayerArgument.java

@@ -179,6 +179,8 @@ public final class PlayerArgument<C> extends CommandArgument<C, Player> {
 
     public static final class PlayerParseException extends ParserException {
 
+        private static final long serialVersionUID = -4839583631837040297L;
+
         private PlayerParseException(
                 final @NonNull String input,
                 final @NonNull CommandContext<?> context

cloud-minecraft/cloud-velocity/src/main/java/cloud/commandframework/velocity/arguments/ServerArgument.java

@@ -172,6 +172,8 @@ public final class ServerArgument<C> extends CommandArgument<C, RegisteredServer
 
     public static final class ServerParseException extends ParserException {
 
+        private static final long serialVersionUID = 9168156226853233788L;
+
         private ServerParseException(
                 final @NonNull String input,
                 final @NonNull CommandContext<?> context

cloud-services/src/main/java/cloud/commandframework/services/AnnotatedMethodService.java

@@ -52,6 +52,7 @@ class AnnotatedMethodService<Context, Result> implements Service<Context, Result
                 executionOrder = order.value();
             }
         } catch (final Exception ignored) {
+            // This is fine
         }
         this.instance = instance;
         this.executionOrder = executionOrder;

cloud-services/src/main/java/cloud/commandframework/services/PipelineException.java

@@ -32,6 +32,8 @@ import org.checkerframework.checker.nullness.qual.NonNull;
  */
 public final class PipelineException extends RuntimeException {
 
+    private static final long serialVersionUID = -7092487758537841656L;
+
     /**
      * Construct a new pipeline exception
      *

cloud-services/src/main/java/cloud/commandframework/services/ServicePipeline.java

@@ -108,7 +108,7 @@ public final class ServicePipeline {
      * @return Service pipeline instance
      * @throws Exception Any exceptions thrown during the registration process
      */
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings({"unchecked", "rawtypes"})
     public <T> @NonNull ServicePipeline registerMethods(
             final @NonNull T instance
     ) throws Exception {

cloud-services/src/main/java/cloud/commandframework/services/types/ConsumerService.java

@@ -50,6 +50,7 @@ public interface ConsumerService<Context>
     }
 
     @Override
+    @SuppressWarnings("FunctionalInterfaceMethodChanged")
     default @NonNull State handle(final @NonNull Context context) {
         try {
             this.accept(context);
@@ -71,6 +72,8 @@ public interface ConsumerService<Context>
 
     class PipeBurst extends RuntimeException {
 
+        private static final long serialVersionUID = -1143137258194595985L;
+
         private PipeBurst() {
         }
 

cloud-services/src/main/java/cloud/commandframework/services/types/Service.java

@@ -55,6 +55,7 @@ public interface Service<Context, Result> extends Function<@NonNull Context, @Nu
     @Nullable Result handle(@NonNull Context context) throws Exception;
 
     @Override
+    @SuppressWarnings("FunctionalInterfaceMethodChanged")
     default @Nullable Result apply(@NonNull Context context) {
         try {
             return this.handle(context);

cloud-services/src/test/java/cloud/commandframework/services/mock/DefaultMockService.java

@@ -23,7 +23,7 @@
 //
 package cloud.commandframework.services.mock;
 
-public class DefaultMockService implements MockService {
+public final class DefaultMockService implements MockService {
 
     @Override
     public MockResult handle(final MockContext mockContext)
@@ -37,6 +37,8 @@ public class DefaultMockService implements MockService {
 
     public static class TotallyIntentionalException extends Exception {
 
+        private static final long serialVersionUID = -6277471288867949574L;
+
     }
 
 }

cloud-services/src/test/java/cloud/commandframework/services/mock/package-info.java

@@ -0,0 +1,28 @@
+//
+// MIT License
+//
+// Copyright (c) 2020 Alexander Söderberg & Contributors
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+/**
+ * Mock service files
+ */
+package cloud.commandframework.services.mock;

cloud-tasks/src/main/java/cloud/commandframework/tasks/TaskRecipe.java

@@ -35,7 +35,7 @@ import java.util.function.BiConsumer;
  * A task recipe is a chain of tasks with optional synchronization steps,
  * that can be used to produce some sort of result from some input
  */
-@SuppressWarnings("ALL")
+@SuppressWarnings({"unchecked", "rawtypes", "unused", "overloads"})
 public final class TaskRecipe {
 
     private final TaskSynchronizer synchronizer;

examples/example-bukkit/src/main/java/cloud/commandframework/examples/bukkit/ExamplePlugin.java

@@ -91,6 +91,7 @@ import java.util.function.Function;
 /**
  * Example plugin class
  */
+@SuppressWarnings("unused")
 public final class ExamplePlugin extends JavaPlugin {
 
     private BukkitCommandManager<CommandSender> manager;

examples/example-jda/src/main/java/cloud/commandframework/examples/jda/CustomUser.java

@@ -38,7 +38,7 @@ public abstract class CustomUser {
      * @param user    Sending user
      * @param channel Channel that the message was sent in
      */
-    public CustomUser(final @NonNull User user, final @NonNull MessageChannel channel) {
+    protected CustomUser(final @NonNull User user, final @NonNull MessageChannel channel) {
         this.user = user;
         this.channel = channel;
     }

examples/example-velocity/src/main/java/cloud/commandframework/examples/velocity/ExampleVelocityPlugin.java

@@ -37,7 +37,6 @@ import com.velocitypowered.api.event.Subscribe;
 import com.velocitypowered.api.event.proxy.ProxyInitializeEvent;
 import com.velocitypowered.api.plugin.Plugin;
 import com.velocitypowered.api.proxy.Player;
-import com.velocitypowered.api.proxy.ProxyServer;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
@@ -45,7 +44,6 @@ import net.kyori.adventure.text.format.NamedTextColor;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.function.Function;
-import java.util.logging.Logger;
 
 @Plugin(
         id = "example-plugin",
@@ -54,10 +52,6 @@ import java.util.logging.Logger;
 )
 public final class ExampleVelocityPlugin {
 
-    @Inject
-    private ProxyServer server;
-    @Inject
-    private Logger logger;
     @Inject
     private Injector injector;