testers.add(CollectionSerializationEqualTester.class);
    testers.add(MultisetAddTester.class);
    testers.add(MultisetContainsTester.class);
    testers.add(MultisetCountTester.class);
    testers.add(MultisetElementSetTester.class);
    testers.add(MultisetEqualsTester.class);
    testers.add(MultisetForEachEntryTester.class);
    testers.add(MultisetReadsTester.class);

                repoIds.add(repository.getId());
                artifactRepositories.add(repository);
            }
        }

        if (recessiveRepositories != null) {
            for (ArtifactRepository repository : recessiveRepositories) {
                if (repoIds.add(repository.getId())) {
                    artifactRepositories.add(repository);
                }
            }

            .createTestSuite());

    derivedSuites.add(computeEntriesTestSuite(parentBuilder));
    derivedSuites.add(computeMultimapGetTestSuite(parentBuilder));
    derivedSuites.add(computeMultimapAsMapGetTestSuite(parentBuilder));
    derivedSuites.add(computeKeysTestSuite(parentBuilder));
    derivedSuites.add(computeValuesTestSuite(parentBuilder));

    return derivedSuites;
  }

        new ImmutableList.Builder<String>().add("a").add("b").add("a").add("c").build();
    assertEquals(asList("a", "b", "a", "c"), list);
  }

  @GwtIncompatible("Builder impl")
  public void testBuilderForceCopy() {
    ImmutableList.Builder<Integer> builder = ImmutableList.builder();
    Object[] prevArray = null;
    for (int i = 0; i < 10; i++) {
      builder.add(i);
      assertNotSame(builder.contents, prevArray);

                .of(stream -> stream.filter(StringUtil::isNotBlank).forEach(contentFieldNameSet::add));
        split(fessConfig.getSuggestFieldTags(), ",").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(tagFieldNameSet::add));
        split(fessConfig.getSuggestFieldRoles(), ",").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(roleFieldNameSet::add));

  }

  private interface Adder {
    int add(int a, int b);
  }

  private static class ForwardingArithmetic implements Arithmetic {
    private final Arithmetic arithmetic;

    public ForwardingArithmetic(Arithmetic arithmetic) {
      this.arithmetic = arithmetic;
    }

    @Override
    public int add(int a, int b) {
      return arithmetic.add(a, b);
    }

    @Override

    SetBuilderImpl<E> builder = new RegularSetBuilderImpl<>(6 + others.length);
    builder = builder.add(e1).add(e2).add(e3).add(e4).add(e5).add(e6);
    for (int i = 0; i < others.length; i++) {
      builder = builder.add(others[i]);
    }
    return builder.review().build();
  }

  /**

    ms.add("foo");
    ms.add("a");
    ms.add("bar");
    ms.add("b");
    ms.add("c");

    assertEquals(2, ms.count("bar"));
    assertEquals(3, ms.count("b"));

    Multiset<String> ms2 = TreeMultiset.create(DEGENERATE_COMPARATOR);

    ms2.add("cat", 2);
    ms2.add("x", 3);

    assertEquals(ms, ms2);
    assertEquals(ms2, ms);

      ImmutableRangeSet.<Integer>builder()
          .add(Range.closed(2, 4))
          .add(Range.open(6, 7))
          .add(Range.closedOpen(8, 10))
          .add(Range.openClosed(15, 17))
          .build();

  private static final ImmutableRangeSet<Integer> RANGE_SET_TWO =
      ImmutableRangeSet.<Integer>builder()
          .add(Range.openClosed(0, 3))
          .add(Range.closed(5, 8))
          .add(Range.closedOpen(12, 15))

   * // Returns "ClassName{x=1}"
   * MoreObjects.toStringHelper(this)
   *     .add("x", 1)
   *     .toString();
   *
   * // Returns "MyObject{x=1}"
   * MoreObjects.toStringHelper("MyObject")
   *     .add("x", 1)
   *     .toString();
   *
   * // Returns "ClassName{x=1, y=foo}"
   * MoreObjects.toStringHelper(this)
   *     .add("x", 1)
   *     .add("y", "foo")
   *     .toString();
   *
   * // Returns "ClassName{x=1}"