private void toggleRepositoriesFromCommits() {
    LinkedHashSet<CheckedTreeNode> checkedNodes = StreamEx.of(getSelectedTreeNodes())
      .map(n -> n instanceof CommitNode ? n.getParent() : n)
      .select(CheckedTreeNode.class)
      .filter(CheckedTreeNode::isEnabled)
      .toCollection(LinkedHashSet::new);
    if (checkedNodes.isEmpty()) return;
    // use new state from first lead node;
    boolean newState = !checkedNodes.iterator().next().isChecked();
    checkedNodes.forEach(n -> myTree.setNodeState(n, newState));
  }
private void toggleRepositoriesFromCommits()