code: def test_graph_edit_children(self):
      g = Graph.Ring(5)
      fig = go.Figure()
      plot(
          g,
          target=fig,
          vertex_shape="circle",
          layout=self.layout_small_ring,
      )
      # FIXME
      # dot = ax.get_children()[0]
      # dot.set_facecolor("blue")
      # dot.radius *= 0.5
      return fig
  
imports: 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_edit_children() and returns: fig