private IDiagramGraph GetGraph(ModelRelationshipStereotype stereotype)
{
var transitivityPartitionKey = _modelRelationshipFeatureProvider.GetTransitivityPartitionKey(stereotype);
_diagramGraphsByRelationshipTransitivityGroup.TryGetValue(transitivityPartitionKey, out var graph);
return(graph ?? DiagramGraph.Empty());
}
private static IDictionary <string, IDiagramGraph> CreateDiagramGraphsByRelationshipTransitivityGroup(
[NotNull] IModelRelationshipFeatureProvider modelRelationshipFeatureProvider,
[NotNull][ItemNotNull] IImmutableSet <IDiagramNode> nodes,
[NotNull][ItemNotNull] IImmutableSet <IDiagramConnector> connectors)
{
return(connectors.GroupBy(i => modelRelationshipFeatureProvider.GetTransitivityPartitionKey(i.ModelRelationship.Stereotype))
.ToDictionary(i => i.Key, i => DiagramGraph.Create(nodes, i.ToImmutableHashSet())));
}