label is nullable (matcheskb_edges.label), weight drives stroke thickness in the Atlas grammar.{
"edge_kind": "express",
"id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
"label": "string",
"polarity": "forward",
"source": "07b8e003-7027-443f-88b0-24a5eb1cc68b",
"target": "65a17d54-9c67-4477-8b80-d3f97e165aa5",
"weight": 0
}