in gdbclient/graph/detachedgraph.go [299:309]
func (d *DetachedEdge) String() string {
inId := "?"
outId := "?"
if d.inVertex != nil {
inId = d.inVertex.id
}
if d.outVertex != nil {
outId = d.outVertex.id
}
return "e[" + d.id + "][" + outId + "-" + d.label + "->" + inId + "]"
}