assertEquals(p1.apply(1.0f), p2.apply(1.0f));
    assertEquals(p1.apply(5.0f), p2.apply(5.0f));
  }

  public void testForPredicate() {
    Function<Object, Boolean> alwaysTrue = Functions.forPredicate(Predicates.alwaysTrue());
    Function<Object, Boolean> alwaysFalse = Functions.forPredicate(Predicates.alwaysFalse());

    assertTrue(alwaysTrue.apply(0));
    assertFalse(alwaysFalse.apply(0));

    assertEquals(p1.apply(1.0f), p2.apply(1.0f));
    assertEquals(p1.apply(5.0f), p2.apply(5.0f));
  }

  public void testForPredicate() {
    Function<Object, Boolean> alwaysTrue = Functions.forPredicate(Predicates.alwaysTrue());
    Function<Object, Boolean> alwaysFalse = Functions.forPredicate(Predicates.alwaysFalse());

    assertTrue(alwaysTrue.apply(0));
    assertFalse(alwaysFalse.apply(0));

    checkNotNull(keyFunction);
    checkNotNull(valueFunction);
    return Collector.of(
        ImmutableMap.Builder<K, V>::new,
        (builder, input) -> builder.put(keyFunction.apply(input), valueFunction.apply(input)),
        ImmutableMap.Builder::combine,
        ImmutableMap.Builder::buildOrThrow);
  }

  static <T extends @Nullable Object, K, V> Collector<T, ?, ImmutableMap<K, V>> toImmutableMap(

    Predicate<String> post = SerializableTester.reserializeAndAssert(pre);
    assertEquals(pre.apply("foo"), post.apply("foo"));
    assertEquals(pre.apply(null), post.apply(null));
  }

  public void testNotNull_apply() {
    Predicate<@Nullable Integer> notNull = Predicates.notNull();
    assertFalse(notNull.apply(null));
    assertTrue(notNull.apply(1));
  }

  public void testNotNull_equality() {
    new EqualsTester()

        ClosingFuture.from(executor.submit(Callables.returning(closeable1)))
            .transform(
                new ClosingFunction<TestCloseable, String>() {
                  @Override
                  public String apply(DeferredCloser closer, TestCloseable v) throws Exception {
                    assertThat(v).isSameInstanceAs(closeable1);
                    return "value";
                  }
                },

        for (final ElevateWord elevateWord : list) {
            suggester.indexer().deleteElevateWord(elevateWord.getSuggestWord(), apply);
        }
        refresh();
    }

    public void deleteElevateWord(final String word, final boolean apply) {
        suggester.indexer().deleteElevateWord(word, apply);
        refresh();
    }

      this.g = checkNotNull(g);
      this.f = checkNotNull(f);
    }

    @Override
    @ParametricNullness
    public C apply(@ParametricNullness A a) {
      return g.apply(f.apply(a));
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof FunctionComposition) {

            final DefaultQueryBuilderFunction builder) {
        final BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        boolQuery.should(builder.apply(fessConfig.getIndexFieldTitle(), fessConfig.getQueryBoostTitleAsDecimal().floatValue()));
        boolQuery.should(builder.apply(fessConfig.getIndexFieldContent(), fessConfig.getQueryBoostContentAsDecimal().floatValue()));

fun Response.Builder.commonRequest(request: Request) =
  apply {
    this.request = request
  }

fun Response.Builder.commonProtocol(protocol: Protocol) =
  apply {
    this.protocol = protocol
  }

fun Response.Builder.commonCode(code: Int) =
  apply {
    this.code = code
  }

fun Response.Builder.commonMessage(message: String) =
  apply {
    this.message = message
  }

    Predicate<String> post = SerializableTester.reserializeAndAssert(pre);
    assertEquals(pre.apply("foo"), post.apply("foo"));
    assertEquals(pre.apply(null), post.apply(null));
  }

  public void testNotNull_apply() {
    Predicate<@Nullable Integer> notNull = Predicates.notNull();
    assertFalse(notNull.apply(null));
    assertTrue(notNull.apply(1));
  }

  public void testNotNull_equality() {
    new EqualsTester()