code: def setUp(self):
      nw = Mock(RequestsNetworkWrapper())
      nw.GET.return_value = "GET"
      nw.POST.return_value = "POST"
      nw.PUT.return_value = "PUT"
      nw.DELETE.return_value = "DELETE"
  
      self.sc = ServiceClient("endpoint/", network_wrapper=nw)
      self.scClientDoesNotEndWithSlash = ServiceClient(
          "endpoint", network_wrapper=nw
      )
  
imports: import json
  import requests
  from requests.auth import HTTPBasicAuth
  from tabpy.tabpy_tools.rest import RequestsNetworkWrapper, ServiceClient
  import unittest
  from unittest.mock import Mock
label_desc: Use image node_id 1 for calling the TestServiceClient obj's underlying member method code with example usage: obj.setUp() without return types