code: def testExtendAfterQueueRunners(self):
      server = self._cached_server
      with session.Session(server.target) as sess:
          input_queue = input_ops.input_producer(
              constant_op.constant([0.0], dtype=dtypes.float32)
          )
          self.assertIsNotNone(input_queue)
  
          var = variable_v1.VariableV1(
              1.0, dtype=dtypes.float32, trainable=False, name="var"
          )
  
          sess.run(variables.global_variables_initializer())
          queue_runner_impl.start_queue_runners(sess)
          sess.run(var.assign(3.0))
  
imports: import time
  import numpy
  from tensorflow.core.protobuf import cluster_pb2
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.core.protobuf import tensorflow_server_pb2
  from tensorflow.python.client import session
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.training import input
  from tensorflow.python.training import queue_runner_impl
  from tensorflow.python.training import server_lib
  from tsl.protobuf import rpc_options_pb2
label_desc: Use image node_id 16 for calling the GrpcServerTest obj's underlying member method code with example usage: obj.testExtendAfterQueueRunners() without return types