code: def context(self):
      ctx_str = json.dumps(ctx.dump())
      return db_pb2.HandlerContext(
          handler_type=self.handler_type,
          handler_params=json.dumps(self.handler_params),
          context=ctx_str,
      )
  
imports: import os
  import pickle
  import json
  import grpc
  from mindsdb.microservices_grpc.db import db_pb2_grpc
  from mindsdb.microservices_grpc.db import db_pb2, common_pb2
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse
  from mindsdb.integrations.libs.handler_helpers import action_logger
  from mindsdb.utilities.context import context
  from mindsdb.utilities import log
label_desc: Use image node_id 3 for calling the DBClientGRPC obj's underlying member method code with example usage: obj.context() and returns: db_pb2