class_docstr: This handler handles connection and execution of the Couchbase statements.
docstr: Check the connection of the Couchbase bucket
  :return: success status and error message if error occurs
docstr_tok: ["Check","the","connection","of","the","Couchbase","bucket",":","return",":","success","status","and","error","message","if","error","occurs"]
code: def check_connection(self) -> StatusResponse:
      """
      Check the connection of the Couchbase bucket
      :return: success status and error message if error occurs
      """
      result = StatusResponse(False)
      need_to_close = self.is_connected is False
  
      try:
          cluster = self.connect()
          result.success = cluster.connected
      except UnAmbiguousTimeoutException as e:
          logger.error(
              f'Error connecting to Couchbase {self.connection_data["bucket"]}, {e}!'
          )
          result.error_message = str(e)
  
      if result.success is True and need_to_close:
          self.disconnect()
      if result.success is False and self.is_connected is True:
          self.is_connected = False
      return result
  
imports: from datetime import timedelta
  from collections import OrderedDict
  from mindsdb.integrations.libs.base import DatabaseHandler
  from mindsdb.utilities import log
  from mindsdb_sql.parser.ast.base import ASTNode
  import pandas
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse, RESPONSE_TYPE
  from couchbase.auth import PasswordAuthenticator
  from couchbase.cluster import Cluster
  from couchbase.exceptions import UnAmbiguousTimeoutException
  from couchbase.options import ClusterOptions
  from couchbase.exceptions import KeyspaceNotFoundException, CouchbaseException
label_desc: Use image node_id 4 for calling the CouchbaseHandler obj's underlying member method code with example usage: obj.check_connection() and returns: result