/*
   * These methods perform most headSet, subSet, and tailSet logic, besides parameter validation.
   */
  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> headSetImpl(C toElement, boolean inclusive);

  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> subSetImpl(

  /*
   * These methods perform most headSet, subSet, and tailSet logic, besides parameter validation.
   */
  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> headSetImpl(C toElement, boolean inclusive);

  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> subSetImpl(

        </module>
        <module name="MethodTypeParameterName">
            <property name="format" value="^([A-Z][a-z]*)+$"/>
        </module>

        <!-- Annotations -->
        <module name="MissingOverride"/>

        <!-- allows suppressing using the //CHECKSTYLE:ON //CHECKSTYLE:OFF -->
        <module name="SuppressionCommentFilter"/>
        <!-- to enable SuppressWarningsFilter -->

  }

  /**
   * {@inheritDoc}
   *
   * @since NEXT. Note, however, that Java 19+ users can call this method with any version of Guava.
   */
  @SuppressWarnings("MissingOverride") // not an override under J2CL
  @ParametricNullness
  public V resultNow() {
    Object localValue = value();
    if (localValue == null | localValue instanceof DelegatingToFuture) {

  /** Returns a matcher that matches any character not matched by this matcher. */
  // This is not an override in java7, where Guava's Predicate does not extend the JDK's Predicate.
  @SuppressWarnings("MissingOverride")
  public CharMatcher negate() {
    return new Negated(this);
  }

  /**
   * Returns a matcher that matches any character matched by both this matcher and {@code other}.
   */

  /** Returns a matcher that matches any character not matched by this matcher. */
  // This is not an override in java7, where Guava's Predicate does not extend the JDK's Predicate.
  @SuppressWarnings("MissingOverride")
  public CharMatcher negate() {
    return new Negated(this);
  }

  /**
   * Returns a matcher that matches any character matched by both this matcher and {@code other}.
   */