code: def test_input_specs(self):
      @eager_def_function.function(
          input_signature=[
              {
                  "a": tensor_spec.TensorSpec([], dtypes.int32),
                  "b": tensor_spec.TensorSpec([], dtypes.int32),
              }
          ]
      )
      def test_input_dict(value):
          return math_ops.add(value["a"], value["b"])
  
      port = portpicker.pick_unused_port()
      address = "localhost:{}".format(port)
      server_resource = rpc_ops.GrpcServer(address)
  
      server_resource.register("test_input_dict", test_input_dict)
  
      server_resource.start()
  
      client = rpc_ops.GrpcClient(
          address=address,
          name="test_client",
          list_registered_methods=True,
      )
      a = variables.Variable(2, dtype=dtypes.int32)
      b = variables.Variable(3, dtype=dtypes.int32)
      result_or = client.test_input_dict({"a": a, "b": b})
      self.assertAllEqual(result_or.is_ok(), True)
      self.assertAllEqual(result_or.get_value(), 5)
  
      with self.assertRaises(TypeError):
          client.test_input_dict([a, b])
  
imports: import threading
  import time
  import numpy
  import portpicker
  from tensorflow.python.distribute.experimental.rpc import rpc_ops
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.util import nest
label_desc: Use image node_id 8 for calling the RpcOpsTest obj's underlying member method code with example usage: obj.test_input_specs() and returns: math_ops