code: def test_bool_default(self):
      self.assertTrue(WithDefaultTrue().param)
      self.assertFalse(WithDefaultFalse().param)
  
file_path: gokart/test/test_explicit_bool_parameter.py
imports: import unittest
  import luigi
  import luigi.mock
  from luigi.cmdline_parser import CmdlineParser
  import gokart
label_desc: Use image node_id 1 for calling the TestExplicitBoolParameter obj's underlying member method code with example usage: obj.test_bool_default() without return types