@Override
    protected void onDoubleClick() {
      myRef.get().cancel();

      ChangesBrowserNode<?> selection = VcsTreeModelData.selected(myViewer).iterateNodes().first();
      GenericChangesBrowserNode node = ObjectUtils.tryCast(selection, GenericChangesBrowserNode.class);
      if (node == null) return;

      T newSelection = myChanges.getList().get(node.getIndex());
      IdeFocusManager.getGlobalInstance().doWhenFocusSettlesDown(() -> onSelected(newSelection));
    }
@Override
    protected void onDoubleClick()