@Override
  public boolean isSelectionExists(@NotNull PropagationDirection direction) {
    for (final TraceContainer container : myTraceContainers) {
      if (container.highlightedExists()) {
        return true;
      }
    }

    return PropagationDirection.FORWARD.equals(direction)
           ? selectionExistsForward()
           : selectionExistsBackward();
  }
@Override
  public boolean isSelectionExists(@NotNull PropagationDirection direction)