* to the build path.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface Type extends ExtensibleEnum {
    /**
     * Artifact type name for a POM file.
     */
    String POM = "pom";

    /**
     * Artifact type name for a BOM file.
     */
    String BOM = "bom";

    /**
     * Artifact type name for a JAR file that can be placed either on the class-path or on the module-path.

        CURRENT = JAVA6;
      }
    }

    abstract Type newArrayType(Type componentType);

    abstract Type usedInGenericType(Type type);

    final ImmutableList<Type> usedInGenericType(Type[] types) {
      ImmutableList.Builder<Type> builder = ImmutableList.builder();
      for (Type type : types) {
        builder.add(usedInGenericType(type));
      }
      return builder.build();
    }

        assertArgumentNotNull("type", type);
        assertArgumentNotNull("clazz", clazz);

        if (type instanceof Class) {
            return clazz.isAssignableFrom((Class<?>) type);
        }
        if (type instanceof ParameterizedType) {
            final ParameterizedType parameterizedType = ParameterizedType.class.cast(type);
            return isTypeOf(parameterizedType.getRawType(), clazz);

    /**
     * Performs a collection lookup for given typed components.
     *
     * @param type The component type.
     * @return The map of components. The map may be empty if no components found.
     * @param <T> The component type.
     * @throws LookupException if there is some provisioning related issue.
     */
    @Nonnull
    <T> Map<String, T> lookupMap(Class<T> type);

    public ArtifactType get(String typeId) {
        Type type = typeRegistry.require(typeId);
        if (type instanceof ArtifactType) {
            return (ArtifactType) type;
        }
        if (type != null) {
            return new DefaultType(
                    type.id(),
                    type.getLanguage(),
                    type.getExtension(),
                    type.getClassifier(),

            Type type = types.get(id);
            if (type == null) {
                // Copy data as the ArtifactHandler is not immutable, but Type should be.
                ArtifactHandler handler = manager.getArtifactHandler(id);
                type = new DefaultType(
                        id,
                        languageRegistry.require(handler.getLanguage()),
                        handler.getExtension(),

      }

      private /*static*/ <S> S doConvert(TypeToken<S> type) {
        return checkNotNull(getDefaultValue(type));
      }
    };
  }

  private static TypeToken<?> getFirstTypeParameter(Type type) {
    if (type instanceof ParameterizedType) {
      return TypeToken.of(((ParameterizedType) type).getActualTypeArguments()[0]);
    } else {
      return TypeToken.of(Object.class);
    }

        }

        if (artifactId == null) {
            throw new InvalidArtifactRTException(
                    groupId, artifactId, getVersion(), type, "The artifactId cannot be empty.");
        }

        if (type == null) {
            throw new InvalidArtifactRTException(groupId, artifactId, getVersion(), type, "The type cannot be empty.");
        }

      if (types.length > 0 && mayNeedHiddenThis()) {
        Class<?>[] rawParamTypes = constructor.getParameterTypes();
        if (types.length == rawParamTypes.length
            && rawParamTypes[0] == getDeclaringClass().getEnclosingClass()) {
          // first parameter is the hidden 'this'
          return Arrays.copyOfRange(types, 1, types.length);
        }
      }
      return types;

    assertNotPrimitive(type);
    assertEquals(TypeToken.of(Primitives.unwrap((Class<?>) type.getType())), type.unwrap());
  }

  private static void assertNotWrapper(TypeToken<?> type) {
    assertSame(type, type.unwrap());
  }

  private static void assertNotPrimitiveNorWrapper(TypeToken<?> type) {
    assertNotPrimitive(type);
    assertNotWrapper(type);
  }

  private interface BaseInterface {}