FluentIterable.from(TypeToken.of(clazz).getTypes())
              .transform(TypeToken::getRawType)
              .transformAndConcat(c -> asList(c.getDeclaredMethods()))
              .firstMatch(
                  m ->
                      m.getName().equals("writeReplace")
                          && m.getParameterTypes().length == 0
                          // Only package-private methods are a problem.

    FluentIterable<String> iterable = FluentIterable.from(Lists.newArrayList("cool", "pants"));
    assertThat(iterable.firstMatch(equalTo("cool"))).hasValue("cool");
    assertThat(iterable.firstMatch(equalTo("pants"))).hasValue("pants");
    assertThat(iterable.firstMatch(Predicates.alwaysFalse())).isAbsent();
    assertThat(iterable.firstMatch(Predicates.alwaysTrue())).hasValue("cool");
  }

          FluentIterable.from(TypeToken.of(clazz).getTypes())
              .transform(TypeToken::getRawType)
              .transformAndConcat(c -> asList(c.getDeclaredMethods()))
              .firstMatch(
                  m ->
                      m.getName().equals("writeReplace")
                          && m.getParameterTypes().length == 0
                          // Only package-private methods are a problem.

   * is matched in this fluent iterable, a {@link NullPointerException} will be thrown.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code stream.filter(predicate).findFirst()}.
   */
  public final Optional<@NonNull E> firstMatch(Predicate<? super E> predicate) {
    // Unsafe, but we can't do much about it now.
    return Iterables.<@NonNull E>tryFind((Iterable<@NonNull E>) getDelegate(), predicate);
  }

  /**