create().remove();
    create().add("foo");
    create().addAll(ImmutableList.of("foo"));
    create().clear();
    create().contains("foo");
    create().containsAll(ImmutableList.of("foo"));
    create().equals(new ArrayDeque<>(ImmutableList.of("foo")));
    create().hashCode();
    create().isEmpty();
    create().iterator();
    create().remove("foo");
    create().removeAll(ImmutableList.of("foo"));

    }
  }

  private static final class Collider {
    final int value;

    Collider(int value) {
      this.value = value;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      return obj instanceof Collider && ((Collider) obj).value == value;
    }

    @Override
    public int hashCode() {
      return 1; // evil!
    }
  }

     * @return true if the sort value is valid for facets ("count" or "index"), false otherwise
     */
    public boolean isFacetSortValue(final String sort) {
        return "count".equals(sort) || "index".equals(sort);
    }

    /**
     * Sets the fields that are allowed in API responses.
     *
     * @param fields array of field names that are allowed in API responses
     */

    }

    @Override
    public int count(@Nullable Object element) {
      return standardCount(element);
    }

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

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

    @Override

        // Only select snapshots that are unresolved (eg 1.0-SNAPSHOT, not 1.0-20050607.123456)
        if (artifact.isSnapshot() && artifact.getBaseVersion().equals(artifact.getVersion())) {
            try {
                String version = resolveVersion(artifact, request);
                artifact.updateVersion(version, request.getLocalRepository());

    @SuppressWarnings("unchecked")
    K k = (K) t;
    int unused = comparator().compare(k, k);
    return t;
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    return delegate.equals(obj);
  }

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

  @Override
  public String toString() {
    return delegate.toString();
  }

 * Multimaps#synchronizedSetMultimap}.
 *
 * <p><b>Warning:</b> Do not modify either a key <i>or a value</i> of a {@code HashMultimap} in a
 * way that affects its {@link Object#equals} behavior. Undefined behavior and bugs will result.
 *
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
public final class HashMultimap<K extends @Nullable Object, V extends @Nullable Object>

      standardPutAll(map);
    }

    @Override
    public @Nullable V remove(Object object) {
      return standardRemove(object);
    }

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

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

    @Override
    public Set<K> keySet() {

   * contained references are {@linkplain Object#equals equal} to each other or both are absent.
   * Note that {@code Optional} instances of differing parameterized types can be equal.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> no differences.
   */
  @Override
  public abstract boolean equals(@Nullable Object object);

  /**
   * Returns a hash code for this instance.
   *

    default String getJobTemplateTitle(final String type) {
        if (Constants.WEB_CRAWLER_TYPE.equals(type)) {
            return getJobTemplateTitleWeb();
        }
        if (Constants.FILE_CRAWLER_TYPE.equals(type)) {
            return getJobTemplateTitleFile();
        }
        if (Constants.DATA_CRAWLER_TYPE.equals(type)) {
            return getJobTemplateTitleData();
        }
        return "None";