@TestOnly
  private void flushMergers() {
    assert myProject == null || !myProject.isDisposed() : myProject;
    // Run dummy command in order to flush all mergers...
    //noinspection HardCodedStringLiteral
    CommandProcessor.getInstance().executeCommand(myProject, EmptyRunnable.getInstance(), "Dummy", null);
  }
@TestOnly
  private void flushMergers()