public static List <Edge <TVertex> > CreateAllPairwiseEdges <TVertex>(
[NotNull, ItemNotNull] IEnumerable <TVertex> leftVertices,
[NotNull, ItemNotNull] IEnumerable <TVertex> rightVertices,
[NotNull] EdgeFactory <TVertex, Edge <TVertex> > edgeFactory)
{
var edges = new List <Edge <TVertex> >();
var rightVerticesArray = rightVertices.ToArray();
foreach (TVertex left in leftVertices)
{
foreach (TVertex right in rightVerticesArray)
{
edges.Add(edgeFactory(left, right));
}
}
return(edges);
}