code: def test_poll_noop(self):
      self.conn.poll()
  
imports: import gc
  import time
  import unittest
  import warnings
  import psycopg2
  import psycopg2.errors
  from psycopg2 import extensions
  from .testutils import ConnectingTestCase, StringIO, skip_before_postgres, skip_if_crdb, crdb_version, slow
label_desc: Use image node_id 32 for calling the AsyncTests obj's underlying member method code with example usage: obj.test_poll_noop() without return types