import com.google.common.annotations.GwtCompatible;

/**
 * The subset of the {@link java.util.regex.Matcher} API which is used by this package, and also
 * shared with the {@code re2j} library. For internal use only. Please refer to the {@code Matcher}
 * javadoc for details.
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
abstract class CommonMatcher {
  public abstract boolean matches();

  public abstract boolean find();

 *
 * <p>For {@code ImmutableMultiset} in particular, I ran into a problem with the {@code
 * GwtSerializationDependencies} approach: When autogenerating a serializer for the new class, GWT
 * tries to refer to our dummy serializer for the superclass,
 * ImmutableMultiset_CustomFieldSerializer. But that type has no methods (since it's never actually
 * used). We could probably fix the problem by adding dummy methods to that class, but that is

      public Set<N> nodes() {
        return AbstractNetwork.this.nodes();
      }

      @Override
      public Set<EndpointPair<N>> edges() {
        if (allowsParallelEdges()) {
          return super.edges(); // Defer to AbstractGraph implementation.
        }

        // Optimized implementation assumes no parallel edges (1:1 edge to EndpointPair mapping).
        return new AbstractSet<EndpointPair<N>>() {
          @Override

      throw new UncheckedExecutionException(cause);
    }
    throw newWithCause(exceptionClass, cause);
  }

  /*
   * TODO(user): FutureChecker interface for these to be static methods on? If so, refer to it in
   * the (static-method) Futures.getChecked documentation
   */

  private static boolean hasConstructorUsableByGetChecked(
      Class<? extends Exception> exceptionClass) {
    try {

    if (isAndroid()) {
      /*
       * NPT fails under the old versions of Android we test under because it performs reflection on
       * ImmutableTable, which declares static methods that refer to Collector, which is unavailable
       * under such versions.
       *
       * We use a runtime check here instead of @AndroidIncompatible: @AndroidIncompatible operates

 *       equals} if at all possible. Otherwise, be aware that concepts used throughout this
 *       documentation such as "equal", "same", "unique" and so on actually refer to whether {@link
 *       Comparable#compareTo compareTo} returns zero, not whether {@link Object#equals equals}
 *       returns {@code true}.