code: def test_graph_with_curved_edges(self):
      g = Graph.Ring(24, directed=True, mutual=True)
      lo = g.layout("circle")
      plot(
          g,
          layout=lo,
          target=result_image_folder / "graph_with_curved_edges.png",
          bbox=(800, 800),
          edge_curved=0.25,
          backend="cairo",
      )
  
imports: import random
  import unittest
  from igraph import Graph, plot, VertexClustering
label_desc: Use image node_id 7 for calling the GraphTestRunner obj's underlying member method code with example usage: obj.test_graph_with_curved_edges() without return types