class_docstr: Helper for testing gRPC client logic with a dummy gRPC server.
class_docstr_tok: ["Helper","for","testing","gRPC","client","logic","with","a","dummy","gRPC","server","."]
code: def TestRpc(self, request, context):
      return self._handler(request, context)
  
imports: import contextlib
  import hashlib
  import threading
  import time
  from concurrent import futures
  import grpc
  from tensorboard.util import grpc_util
  from tensorboard.util import grpc_util_test_pb2
  from tensorboard.util import grpc_util_test_pb2_grpc
  from tensorboard.util import test_util
  from tensorboard import test
  from tensorboard import version
label_desc: Use image node_id 2 for calling the TestGrpcServer obj's underlying member method code with example usage: obj.TestRpc(request, context) and returns: self