} else {
        builder.append(c);
        inMatchingGroup = false;
      }
    }
    return builder.toString();
  }

  /**
   * @deprecated Provided only to satisfy the {@link Predicate} interface; use {@link #matches}
   *     instead.
   */
  @Deprecated
  @Override
  public boolean apply(Character character) {
    return matches(character);
  }

  /**

      ImmutableListMultimap<K, V> delegate) {
    return checkNotNull(delegate);
  }

  /**
   * Returns an unmodifiable view of the specified collection, preserving the interface for
   * instances of {@code SortedSet}, {@code Set}, {@code List} and {@code Collection}, in that order
   * of preference.
   *
   * @param collection the collection for which to return an unmodifiable view

      @SuppressWarnings("unchecked")
      T t = (T) valueOrSentinel;
      valueOrSentinel = SENTINEL;
      return t;
    }
  }

  /**
   * Adapts an {@code Enumeration} to the {@code Iterator} interface.
   *
   * <p>This method has no equivalent in {@link Iterables} because viewing an {@code Enumeration} as
   * an {@code Iterable} is impossible. However, the contents can be <i>copied</i> into a collection

        returned = true;
        return null;
      }
      throw new NoSuchElementException();
    }
  }

  /**
   * Adapts an {@code Enumeration} to the {@code Iterator} interface.
   *
   * <p>This method has no equivalent in {@link Iterables} because viewing an {@code Enumeration} as
   * an {@code Iterable} is impossible. However, the contents can be <i>copied</i> into a collection