code: def load_tests(loader, tests, ignore):
      # pylint: disable=unused-argument
      tests.addTests(doctest.DocTestSuite(towhee.datacollection.entity))
      return tests
  
imports: import doctest
  import unittest
  import towhee.datacollection.entity
label_desc: Use image node_id 1 for calling a global function with example usage: load_tests(loader, tests, ignore) and returns: tests