docstr: The check_connection method checks the connection to the handler
  Returns:
      HandlerStatusResponse
docstr_tok: ["The","check_connection","method","checks","the","connection","to","the","handler","Returns",":","HandlerStatusResponse"]
code: def check_connection(self) -> StatusResponse:
      """The check_connection method checks the connection to the handler
      Returns:
          HandlerStatusResponse
      """
      response = StatusResponse(False)
  
      try:
          self.connect()
          response.success = True
  
      except Exception as e:
          logger.error(f"Error connecting to Mendeley: {e}!")
          response.error_message = str(e)
  
      self.is_connected = response.success
      return response
  
file_path: mindsdb/mindsdb/integrations/handlers/mendeley_handler/mendeley_handler.py
imports: from mindsdb_sql import parse_sql
  import pandas
  from mendeley import Mendeley
  from mindsdb.integrations.libs.api_handler import APIHandler, FuncParser
  from mendeley.session import MendeleySession
  from mindsdb.integrations.handlers.mendeley_handler.mendeley_tables import CatalogSearchTable
  from mindsdb.utilities import log
  from typing import Dict
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse, RESPONSE_TYPE
label_desc: Use image node_id 3 for calling the MendeleyHandler obj's underlying member method code with example usage: obj.check_connection() and returns: response