Does sigmaNet work with directed graphs?

[ruthie21]

Actual Behavior

I have a directed igraph which I'd like to plot with sigmaFromIgraph.
However, it seems that addEdgeArrows() has been taken out of the package. How would I add arrows to a directed graph?

Expected/Desired Behavior

How to Reproduce

nodes <- read.csv()
edges <- read.csv()
graph1 <- graph_from_data_frame(d=edges, vertices = nodes, directed = TRUE)
sig <- sigmaFromIgraph(graph1)
sig