set.addAll(set1);
        set.addAll(set2);
        return set;
      }

      @Override
      @SuppressWarnings({"nullness", "unchecked"}) // see supertype
      public ImmutableSet<@NonNull E> immutableCopy() {
        ImmutableSet.Builder<@NonNull E> builder =
            new ImmutableSet.Builder<@NonNull E>()
                .addAll((Iterable<@NonNull E>) set1)

                // and context receivers as well.
                it.getAvailableScopes()
            }

        val result = buildList {
            addAll(nonLocalScopes)
            addIfNotNull(createFakeImportingScope(newImports))
            addAll(towerDataContext.localScopes)
        }

        return result.asReversed()
    }

    Set<Integer> set = Sets.newSetFromMap(new HashMap<Integer, Boolean>());
    set.addAll(SOME_COLLECTION);
    verifySetContents(set, SOME_COLLECTION);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testNewSetFromMapSerialization() {
    Set<Integer> set = Sets.newSetFromMap(new LinkedHashMap<Integer, Boolean>());
    set.addAll(SOME_COLLECTION);

        .inOrder();
  }

  public void testAsMapReadsThrough() {
    Set<String> strings = Sets.newLinkedHashSet();
    Collections.addAll(strings, "one", "two", "three");
    Map<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION);
    assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map);
    assertNull(map.get("four"));

        .inOrder();
  }

  public void testAsMapReadsThrough() {
    Set<String> strings = Sets.newLinkedHashSet();
    Collections.addAll(strings, "one", "two", "three");
    Map<String, Integer> map = Maps.asMap(strings, LENGTH_FUNCTION);
    assertEquals(ImmutableMap.of("one", 3, "two", 3, "three", 5), map);
    assertNull(map.get("four"));

    @Override
    public boolean add(E e) {
      synchronized (mutex) {
        return delegate().add(e);
      }
    }

    @Override
    public boolean addAll(Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(c);
      }
    }

    @Override
    public void clear() {
      synchronized (mutex) {
        delegate().clear();
      }
    }

    assertEquals(nestingDepth, Iterators.size(iterator));
  }

  public void testAddAllWithEmptyIterator() {
    List<String> alreadyThere = Lists.newArrayList("already", "there");

    boolean changed = Iterators.addAll(alreadyThere, Iterators.<String>emptyIterator());
    assertThat(alreadyThere).containsExactly("already", "there").inOrder();
    assertFalse(changed);
  }

  public void testAddAllToList() {

    assertEquals(nestingDepth, Iterators.size(iterator));
  }

  public void testAddAllWithEmptyIterator() {
    List<String> alreadyThere = Lists.newArrayList("already", "there");

    boolean changed = Iterators.addAll(alreadyThere, Iterators.<String>emptyIterator());
    assertThat(alreadyThere).containsExactly("already", "there").inOrder();
    assertFalse(changed);
  }

  public void testAddAllToList() {

                    // candidate is selected.
                    source = ******@****.***
                    annotations.addAll(******@****.***tions)
                    typeArguments.addAll(******@****.***guments)
                    explicitReceiver = unwrappedExplicitReceiver.explicitReceiver

                }
                // validation error, continue project building and delay failing to help IDEs
                // result.getProblems().addAll(e.getProblems()) ?
            }

            Model model = result.getActivatedFileModel();

            modelPool.put(model.getPomFile(), model);