if (!src.isEmpty()) {
            List<String> tgt = target.getModules();
            List<String> merged = new ArrayList<>(tgt.size() + src.size());
            merged.addAll(tgt);
            merged.addAll(src);
            target.setModules(merged);
        }
    }

    protected void mergeModelBase_Dependencies(

  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = new ArrayList<>();
    if (runCollectionTests) {
      testers.addAll(super.getTesters());
    }

    testers.add(QueueElementTester.class);
    testers.add(QueueOfferTester.class);
    testers.add(QueuePeekTester.class);
    testers.add(QueuePollTester.class);

 * the methods of the delegate. For example, overriding {@link #add} alone <i>will not</i> change
 * the behavior of {@link #addAll}, which can lead to unexpected behavior. In this case, you should
 * override {@code addAll} as well, either providing your own implementation, or delegating to the
 * provided {@code standardAddAll} method.
 *

            );

        IdeaModel idea = project.getExtensions().getByType(IdeaModel.class);
        idea.getModule().getTestSourceDirs().addAll(testSourceSet.getJava().getSrcDirs());
        idea.getModule()
            .getScopes()
            .put(
                "TEST",

 * to the methods of the delegate. For example, overriding {@link #add} alone <i>will not</i> change
 * the behavior of {@link #addAll}, which can lead to unexpected behavior. In this case, you should
 * override {@code addAll} as well, either providing your own implementation, or delegating to the
 * provided {@code standardAddAll} method.
 *

      @Override
      protected Multiset<String> create(String[] elements) {
        Multiset<String> multiset = LinkedHashMultiset.create();
        Collections.addAll(multiset, elements);
        multiset.addAll(ELEMENTS_TO_FILTER_OUT);
        return Multisets.filter(multiset, PREDICATE);
      }

      @Override
      public List<String> order(List<String> insertionOrder) {

      }

      // the regular values should be visible after filtering
      List<@Nullable Object> allEntries = new ArrayList<>();
      allEntries.addAll(extremeValues);
      allEntries.addAll(normalValues);
      SortedSet<E> set = delegate.create(allEntries.toArray());

      return createSubSet(set, firstExclusive, lastExclusive);
    }

      checkArgument(predicate.apply(element));
      return unfiltered.add(element);
    }

    @Override
    public boolean addAll(Collection<? extends E> collection) {
      for (E element : collection) {
        checkArgument(predicate.apply(element));
      }
      return unfiltered.addAll(collection);
    }

    @Override
    public void clear() {
      Iterables.removeIf(unfiltered, predicate);
    }

    EnumSetAccumulator<E> combine(EnumSetAccumulator<E> other) {
      if (this.set == null) {
        return other;
      } else if (other.set == null) {
        return this;
      } else {
        this.set.addAll(other.set);
        return this;
      }
    }

    ImmutableSet<E> toImmutableSet() {
      if (set == null) {
        return ImmutableSet.of();
      }

    multiset = ConcurrentHashMultiset.create(map);
    multiset.addAll(ImmutableList.of("a", "a", "b", "c", "d", "b"));
    reserializeAndAssert(multiset);
  }

  public void testSerializationWithMapMaker3() {
    ConcurrentMap<String, AtomicInteger> map = new MapMaker().makeMap();
    multiset = ConcurrentHashMultiset.create(map);
    multiset.addAll(ImmutableList.of("a", "a", "b", "c", "d", "b"));