private void CloneAndAddAllSubgraphs(IGraph root, ISubGraph currentSubgraph,
IDictionary <ISubGraph, ISubGraph> subgraphDictionary)
{
foreach (var subgraph in currentSubgraph.GetSubGraphSubGraphs())
{
var clonedSubgraph = new SubGraph(subgraphDictionary[currentSubgraph], subgraph.Id);
clonedSubgraph.SetAttributes(subgraph.GetAttributes());
clonedSubgraph.SetNodeAttributes(subgraph.GetNodeAttributes());
clonedSubgraph.SetEdgeAttributes(subgraph.GetEdgeAttributes());
var addedSubgraph = root.AddSubGraph(clonedSubgraph);
subgraphDictionary[subgraph] = addedSubgraph;
CloneAndAddAllSubgraphs(root, subgraph, subgraphDictionary);
}
}