code: def test_get_css(self):
      self.client.request("GET", "/pydoc.css")
      response = self.client.getresponse()
  
      self.assertEqual(response.status, 200)
      self.assertEqual(
          response.getheader("Content-type"), "text/css; charset=UTF-8"
      )
  
      # Server raises an exception if we don't start to read the data
      response.read()
  
imports: from xmlrpc.server import DocXMLRPCServer
  import http.client
  import re
  import sys
  import threading
  import unittest
  from test import support
label_desc: Use image node_id 4 for calling the DocXMLRPCHTTPGETServer obj's underlying member method code with example usage: obj.test_get_css() without return types