code: def test_api_callable_objects(self):
      # given
      swagger_client = MagicMock()
      api = MagicMock()
      api.callable_object = MagicMock()
      api.callable_object.sub_property = 13
      swagger_client.api = api
  
      wrapper = SwaggerClientWrapper(swagger_client)
  
      # when
      wrapper.api.method("arg1", kwarg="kwarg1")
      wrapper.api.callable_object("arg2", kwarg="kwarg2")
  
      # then
      api.method.assert_called_once_with("arg1", kwarg="kwarg1")
      api.callable_object.assert_called_once_with(
          "arg2", kwarg="kwarg2"
      )
      self.assertEqual(13, wrapper.api.callable_object.sub_property)
  
imports: import unittest
  from unittest.mock import MagicMock
  from neptune.internal.backends.swagger_client_wrapper import SwaggerClientWrapper
label_desc: Use image node_id 2 for calling the TestSwaggerClientWrapper obj's underlying member method code with example usage: obj.test_api_callable_objects() without return types