private IDiagramGraph GetGraph(ModelRelationshipStereotype stereotype)
{
var transitivityPartitionKey = _modelRelationshipFeatureProvider.GetTransitivityPartitionKey(stereotype);
_diagramGraphsByRelationshipTransitivityGroup.TryGetValue(transitivityPartitionKey, out var graph);
return(graph ?? DiagramGraph.Empty());
}
public static ILayoutGroup Empty(ModelNodeId?parentNodeId = null)
{
return(new LayoutGroup(parentNodeId, DiagramGraph.Empty(allowParallelEdges: false)));
}