class_docstr: This handler handles connection and execution of the Databend statements.
docstr: Set up the connection required by the handler.
  Returns:
      HandlerStatusResponse
docstr_tok: ["Set","up","the","connection","required","by","the","handler",".","Returns",":","HandlerStatusResponse"]
code: def connect(self) -> StatusResponse:
      """
      Set up the connection required by the handler.
      Returns:
          HandlerStatusResponse
      """
  
      if self.is_connected is True:
          return self.connection
  
      self.connection = connector.connect(
          f"https://{self.connection_data['user']}:{self.connection_data['password']}@{self.connection_data['host']}:{self.connection_data['port']}/{self.connection_data['database']}?secure=true"
      )
      self.is_connected = True
  
      return self.connection
  
imports: from typing import Optional
  from collections import OrderedDict
  import pandas
  from databend_sqlalchemy import connector
  from mindsdb_sql import parse_sql
  from mindsdb_sql.render.sqlalchemy_render import SqlalchemyRender
  from mindsdb.integrations.libs.base import DatabaseHandler
  from databend_sqlalchemy.databend_dialect import DatabendDialect
  from mindsdb_sql.parser.ast.base import ASTNode
  from mindsdb.utilities import log
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse, RESPONSE_TYPE
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
label_desc: Use image node_id 3 for calling the DatabendHandler obj's underlying member method code with example usage: obj.connect() and returns: self, self