import org.apache.maven.api.annotations.Nonnull;

/**
 * Interface that defines some kind of enums that can be extended by Maven plugins or extensions.
 *
 * Implementation must have {@code equals()} and {@code hashCode()} implemented, so implementations of this interface
 * can be used as keys.
 *
 * @since 4.0.0
 */
@Experimental
public interface ExtensibleEnum {

    /**

        void testEqualsSelf() {
            assertEquals(data1, data1);
        }

        @Test
        @DisplayName("Should have same hashCode for equal objects")
        void testHashCodeConsistency() {
            assertEquals(data1.hashCode(), data2.hashCode());
        }

        @Test
        @DisplayName("Should not be equal to null")
        void testNotEqualToNull() {

                map.put("id", encodeId(objectName));
                map.put("path", prefix);
                map.put("name", getName(objectName));
                map.put("hashCode", item.hashCode());
                map.put("size", item.size());
                map.put("directory", item.isDir());
                if (!item.isDir()) {
                    map.put("lastModified", item.lastModified());

        return new RegularImmutableSet<E>(set);
    }
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    return Sets.equalsImpl(this, obj);
  }

  @Override
  public int hashCode() {
    return Sets.hashCodeImpl(this);
  }

  // This declaration is needed to make Set.iterator() and
  // ImmutableCollection.iterator() appear consistent to javac's type inference.
  @Override

                public boolean equals(Object obj) {
                    return obj instanceof AlwaysTrueFilter;
                }

                @Override
                public int hashCode() {
                    return AlwaysTrueFilter.class.hashCode();
                }

                @Override
                public String toString() {
                    return "AlwaysTrueFilter[]";
                }
            }

    protected Set<T> delegate() {
      return backingSet;
    }

    @Override
    public boolean equals(@Nullable Object object) {
      return standardEquals(object);
    }

    @Override
    public int hashCode() {
      return standardHashCode();
    }

    @Override
    public boolean addAll(Collection<? extends T> collection) {
      return standardAddAll(collection);
    }

    @Override

        this.weight = weight;
    }

    /**
     * Returns the hash code for this RequestData.
     * @return the hash code
     */
    @Override
    public int hashCode() {
        return Objects.hash(method, url, weight);
    }

    /**
     * Checks if this RequestData is equal to another object.
     * @param obj the object to compare with

    List<String> list = transform(SOME_LIST, SOME_FUNCTION);
    assertEquals(SOME_STRING_LIST.hashCode(), list.hashCode());
  }

  public void testTransformHashCodeSequential() {
    List<String> list = transform(SOME_SEQUENTIAL_LIST, SOME_FUNCTION);
    assertEquals(SOME_STRING_LIST.hashCode(), list.hashCode());
  }

  public void testTransformModifiableRandomAccess() {

   * Character#hashCode(char)}.
   *
   * @param value a primitive {@code char} value
   * @return a hash code for the value
   */
  @InlineMe(replacement = "Character.hashCode(value)")
  @InlineMeValidationDisabled(
      "The hash code of a char is the int version of the char itself, so it's simplest to return"
          + " that.")
  public static int hashCode(char value) {
    return value;
  }

 * but can be extended by registering a {@code org.apache.maven.api.spi.LanguageProvider}.
 * <p>
 * Implementation must have {@code equals()} and {@code hashCode()} implemented, so implementations of this interface
 * can be used as keys.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
@SuppressWarnings("checkstyle:InterfaceIsType")