code: def testWattsStrogatz(self):
      g = Graph.Watts_Strogatz(1, 20, 1, 0.2)
      self.assertTrue(
          isinstance(g, Graph) and g.vcount() == 20 and g.ecount() == 20
      )
  
file_path: python-igraph/tests/test_games.py
imports: import unittest
  from igraph import Graph, InternalError, Layout
label_desc: Use image node_id 7 for calling the GameTests obj's underlying member method code with example usage: obj.testWattsStrogatz() without return types