@NotNull
  @RequiresEdt
  ChangesViewPanel initChangesPanel() {
    if (myChangesPanel == null) {
      Activity activity = StartUpMeasurer.startActivity("ChangesViewPanel initialization");
      ChangesListView tree = new LocalChangesListView(myProject);
      myChangesPanel = new ChangesViewPanel(tree);
      activity.end();
    }
    return myChangesPanel;
  }
@NotNull
  @RequiresEdt
  ChangesViewPanel initChangesPanel()