code: def setUp(self):
      self.g = Graph.Erdos_Renyi(100, 0.2, directed=True)
  
file_path: python-igraph/tests/test_motifs.py
imports: import unittest
  from igraph import Graph
label_desc: Use image node_id 1 for calling the MotifTests obj's underlying member method code with example usage: obj.setUp() without return types