protected UpdatableImmutableBidirectionalGraph(
ImmutableDictionary <TVertexId, TVertex> vertices,
ImmutableDictionary <TEdgeId, TEdge> edges,
ImmutableBidirectionalGraph <TVertexId, VertexIdEdge <TVertexId, TEdgeId> > graph)
{
_vertices = vertices;
_edges = edges;
_graph = graph;
}
protected virtual TGraph CreateInstance(
ImmutableDictionary <TVertexId, TVertex> vertices,
ImmutableDictionary <TEdgeId, TEdge> edges,
ImmutableBidirectionalGraph <TVertexId, VertexIdEdge <TVertexId, TEdgeId> > graph)
=> (TGraph) new UpdatableImmutableBidirectionalGraph <TVertex, TVertexId, TEdge, TEdgeId, TGraph>(vertices, edges, graph);