class_docstr: Youtube handler implementation
docstr: Set up the connection required by the handler.
  Returns
  -------
  StatusResponse
      connection object
docstr_tok: ["Set","up","the","connection","required","by","the","handler",".","Returns","--","--","--","-","StatusResponse","connection","object"]
code: def connect(self) -> StatusResponse:
      """Set up the connection required by the handler.
      Returns
      -------
      StatusResponse
          connection object
      """
      if self.is_connected is True:
          return self.connection
  
      google_oauth2_manager = GoogleOAuth2Manager(
          self.handler_storage,
          self.scopes,
          self.credentials_file,
          self.credentials_url,
          self.connection_data.get("code"),
      )
      creds = google_oauth2_manager.get_oauth2_credentials()
  
      youtube = build(
          "youtube",
          "v3",
          developerKey=self.youtube_api_token,
          credentials=creds,
      )
      self.connection = youtube
  
      return self.connection
  
file_path: mindsdb/mindsdb/integrations/handlers/youtube_handler/youtube_handler.py
imports: from mindsdb.integrations.handlers.youtube_handler.youtube_tables import YoutubeCommentsTable, YoutubeChannelsTable, YoutubeVideosTable
  from mindsdb.integrations.libs.api_handler import APIHandler
  from mindsdb.integrations.libs.response import HandlerStatusResponse
  from mindsdb.utilities import log
  from mindsdb_sql import parse_sql
  from collections import OrderedDict
  from mindsdb.utilities.config import Config
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
  from googleapiclient.discovery import build
  from mindsdb.integrations.handlers.utilities.auth_utilities import GoogleOAuth2Manager
label_desc: Use image node_id 2 for calling the YoutubeHandler obj's underlying member method code with example usage: obj.connect() and returns: self, self