@Override
              public Collection<String> create(String[] elements) {
                List<String> unfiltered = new ArrayList<>();
                unfiltered.add("yyy");
                Collections.addAll(unfiltered, elements);
                unfiltered.add("zzz");
                return Collections2.filter(unfiltered, NOT_YYY_ZZZ);
              }
            })
        .named("Collections2.filter")

        Collection<String> versions = new LinkedHashSet<>();

        if (buildReactor != null) {
            versions.addAll(buildReactor.findVersions(artifact));
        }

        if (ideWorkspace != null) {
            versions.addAll(ideWorkspace.findVersions(artifact));
        }

        versions.addAll(userLocalArtifactRepository.findVersions(artifact));

        return Collections.unmodifiableList(new ArrayList<>(versions));

        Set<Path> mergedProcessed = new HashSet<>(this.processedPoms);
        mergedProcessed.addAll(other.processedPoms);

        Set<Path> mergedModified = new HashSet<>(this.modifiedPoms);
        mergedModified.addAll(other.modifiedPoms);

        Set<Path> mergedErrors = new HashSet<>(this.errorPoms);
        mergedErrors.addAll(other.errorPoms);

        return new UpgradeResult(mergedProcessed, mergedModified, mergedErrors);

  }

  @Override
  protected final Iterable<? extends Stimulus<E, ? super ListIterator<E>>> getStimulusValues() {
    List<Stimulus<E, ? super ListIterator<E>>> list = new ArrayList<>();
    Helpers.addAll(list, iteratorStimuli());
    Helpers.addAll(list, listIteratorStimuli());
    return list;
  }

  @Override
  protected abstract ListIterator<E> newTargetIterator();

            stageTriggers.triggers.forEach(::buildType)
            subProject(stageProject)

            prevStage = stage
            previousPerformanceTestPasses.addAll(stageProject.performanceTests)
            previousCrossVersionTests.addAll(stageProject.crossVersionTests)
        }

        buildType(GitHubMergeQueueCheckPass(model))

        buildTypesOrder = buildTypes
        subProjectsOrder = subProjects

    // For example, external JMH plugin generates code that produces compiler warnings
    if (!name.contains("CompileGeneratedClasses")) {
        options.compilerArgs.addAll(strictCompilerArgs)
    }

            return parent.containsAll(c);
        }

        @Override
        public boolean addAll(final Collection<? extends E> c) {
            return parent.addAll(c);
        }

        @Override
        public boolean addAll(final int index, final Collection<? extends E> c) {
            return parent.addAll(index, c);
        }

        @Override
        public boolean removeAll(final Collection<?> c) {

  static final Iterable<Long> ALL_LONG_CANDIDATES;

  static {
    ImmutableSet.Builder<Long> longValues = ImmutableSet.builder();
    // First add all the integer candidate values.
    longValues.addAll(Iterables.transform(POSITIVE_INTEGER_CANDIDATES, TO_LONG));
    // Add boundary values manually to avoid over/under flow (this covers 2^N for 31 and 63).
    longValues.add(Integer.MAX_VALUE + 1L, Long.MAX_VALUE - 1L, Long.MAX_VALUE);

      assertTrue(Thread.holdsLock(mutex));
      return delegate.containsAll(collection);
    }

    @Override
    public boolean addAll(Collection<? extends E> collection) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.addAll(collection);
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
      assertTrue(Thread.holdsLock(mutex));

        }
        builder.addAll(array);
      }
    },
    ADD_COLLECTION {
      @Override
      void doIt(ImmutableLongArray.Builder builder, AtomicLong counter) {
        List<Long> list = new ArrayList<>();
        long num = random.nextInt(10);
        for (int i = 0; i < num; i++) {
          list.add(counter.getAndIncrement());
        }
        builder.addAll(list);
      }
    },