private void prepareAndShowResults() {
    // todo unite into one window??
    if (!myAccumulatedFiles.isEmpty()) {
      showUpdateTree();
    }
    if (! myExceptions.isEmpty()) {
      AbstractVcsHelper.getInstance(myProject).showErrors(myExceptions, VcsBundle.message("message.title.vcs.update.errors", myExceptions.size()));
    }
  }
private void prepareAndShowResults()