vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
sort(sorted_owners.begin(), sorted_owners.end(),
[](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
sort(sorted_owners.begin(), sorted_owners.end(),
[](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {