code: def Disconnect(self, request, context):
      result = None
      logger.info("%s.disconnect calling", self.__class__.__name__)
      try:
          handler = self._get_handler(request)
          handler.disconnect()
          result = common_pb2.StatusResponse(
              success=True, error_message=""
          )
      except Exception:
          msg = traceback.format_exc()
          result = common_pb2.StatusResponse(
              success=False, error_message=msg
          )
      return result
  
imports: import json
  import pickle
  import traceback
  from concurrent import futures
  import grpc
  from mindsdb.microservices_grpc.db import db_pb2_grpc
  from mindsdb.microservices_grpc.db import db_pb2, common_pb2
  from mindsdb.interfaces.file.file_controller import FileController
  from mindsdb.integrations.libs.handler_helpers import get_handler
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
  from mindsdb.utilities.context import context
  from mindsdb.utilities import log
label_desc: Use image node_id 5 for calling the DBServiceServicer obj's underlying member method code with example usage: obj.Disconnect(request, context) and returns: result