Does this work?
julia> g = CompleteGraph(3)
{3, 3} undirected simple Int64 graph
julia> dg = DiGraph(g)
{3, 6} directed simple Int64 graph
Does this work?
julia> g = CompleteGraph(3)
{3, 3} undirected simple Int64 graph
julia> dg = DiGraph(g)
{3, 6} directed simple Int64 graph