code: def import_models(module):
      
      try:
          module = importlib.import_module('{0}.models'.format(module))
      except ImportError:
          return []
      else:
          clsmembers = inspect.getmembers(module, lambda member: inspect.isclass(member) and member.__module__ == module.__name__)
          return [kls for name, kls in clsmembers]
docs: | Given a module `service`, try to import its models module.
  
      :param module: The module's name to import the models.
      :type module: str
      :rtype: list
      :returns: all the models defined.