code: def _process_server_request(self):
      assert self.server.serve_one_request() == (
          not self.expect_failure
      ), "Server failed to process request"
  
imports: import collections
  import io
  import json
  import sys
  import unittest
  from unittest import mock
  import pytest
  import tvm
  import tvm.testing
label_desc: Use image node_id 2 for calling the ClientServerFixture obj's underlying member method code with example usage: obj._process_server_request() without return types