for (PluginExecution element : tgt) {
                    Object key = getPluginExecutionKey().apply(element);
                    merged.put(key, element);
                }

                for (PluginExecution element : src) {
                    Object key = getPluginExecutionKey().apply(element);
                    PluginExecution existing = merged.get(key);

  @Override
  public int indexOf(@CheckForNull Object element) {
    return delegate().indexOf(element);
  }

  @Override
  public int lastIndexOf(@CheckForNull Object element) {
    return delegate().lastIndexOf(element);
  }

  @Override
  public ListIterator<E> listIterator() {
    return delegate().listIterator();
  }

  @Override
  public ListIterator<E> listIterator(int index) {

Diagnostics from elements:
  for PSI element of type KtCallExpression at (23,20) - (26,2)
    TYPE_MISMATCH      text ranges: [(97,159)]
      PSI: KtCallExpression at (23,20) - (26,2)
  for PSI element of type KtLambdaExpression at (23,24) - (26,2)
    TYPE_MISMATCH      text ranges: [(101,159)]
      PSI: KtLambdaExpression at (23,24) - (26,2)
  for PSI element of type KtNameReferenceExpression at (24,5-17)
    UNRESOLVED_REFERENCE      text ranges: [(107,119)]

    if (occurrences == 0) {
      return count(element);
    }
    checkArgument(occurrences > 0, "occurrences cannot be negative: %s", occurrences);
    int entryIndex = backingMap.indexOf(element);
    if (entryIndex == -1) {
      backingMap.put(element, occurrences);
      size += occurrences;
      return 0;
    }
    int oldCount = backingMap.getValue(entryIndex);

 * Implementation of {@link ImmutableList} with exactly one element.
 *
 * @author Hayward Chan
 */
@GwtCompatible(serializable = true, emulated = true)
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
@ElementTypesAreNonnullByDefault
final class SingletonImmutableList<E> extends ImmutableList<E> {

  final transient E element;

  SingletonImmutableList(E element) {
    this.element = checkNotNull(element);
  }

  public E floor(E element) {
    int index = headIndex(element, true) - 1;
    return (index == -1) ? null : elements.get(index);
  }

  @Override
  @CheckForNull
  public E ceiling(E element) {
    int index = tailIndex(element, true);
    return (index == size()) ? null : elements.get(index);
  }

  @Override
  @CheckForNull
  public E higher(E element) {
    int index = tailIndex(element, false);

                }
                println("${element.lhs} !:= ${element.rhs} -- unassigned property in $locationString")
            }
            is AssignmentTraceElement.Reassignment -> {
                println("${element.lhs} !:= ${element.rhs} -- reassignment")
            }
            is AssignmentTraceElement.RecordedAssignment -> {
                val assigned = trace.resolvedAssignments.getValue(element.lhs) as Assigned

        super(objects, nameFilter, elementFilter, instantiator, namer);
    }

    @Override
    public void add(int index, T element) {
        assertMutable("add(int, T)");
        assertCanAdd(element);
        getStore().add(index, element);
        didAdd(element);
        getEventRegister().fireObjectAdded(element);
    }

    @Override
    public boolean addAll(int index, Collection<? extends T> c) {

  public E floor(E element) {
    int index = headIndex(element, true) - 1;
    return (index == -1) ? null : elements.get(index);
  }

  @Override
  @CheckForNull
  public E ceiling(E element) {
    int index = tailIndex(element, true);
    return (index == size()) ? null : elements.get(index);
  }

  @Override
  @CheckForNull
  public E higher(E element) {
    int index = tailIndex(element, false);

    public boolean isSatisfiedBy(StackTraceElement element) {
        return !isInternalClass(element) && !isGeneratedMethod(element);
    }

    private boolean isInternalClass(StackTraceElement element) {
        return INTERNAL_CLASSES.matcher(element.getClassName()).matches();
    }

    private boolean isGeneratedMethod(StackTraceElement element) {
        return element.getLineNumber() < 0;
    }