code: def test_run(main=False):
      """
      Instantiate the TestFrompackages and see that no exception is raised
      Bug Discussion:
      https://community.backtrader.com/topic/2661/frompackages-directive-functionality-seems-to-be-broken-when-using-inheritance
      """
      test = TestFrompackages()
  
imports: import testcommon
label_desc: Use image node_id 1 for calling a global function with example usage: test_run(main) without return types