class_docstr: A class for handling connections and interactions with the Gmail API.
  
  Attributes:
      credentials_file (str): The path to the Google Auth Credentials file for authentication
      and interacting with the Gmail API on behalf of the uesr.
  
      scopes (List[str], Optional): The scopes to use when authenticating with the Gmail API.
class_docstr_tok: ["A","class","for","handling","connections","and","interactions","with","the","Gmail","API",".","Attributes",":","credentials_file","(","str",")",":","The","path","to","the","Google","Auth","Credentials","file","for","authentication","and","interacting","with","the","Gmail","API","on","behalf","of","the","uesr",".","scopes","(","List","[","str","]",",","Optional",")",":","The","scopes","to","use","when","authenticating","with","the","Gmail","API","."]
code: def _download_secret_file(self, secret_file):
      # Giving more priority to the S3 file
      if self.credentials_url:
          response = requests.get(self.credentials_url)
          if response.status_code == 200:
              with open(secret_file, "w") as creds:
                  creds.write(response.text)
              return True
          else:
              logger.error(
                  "Failed to get credentials from S3",
                  response.status_code,
              )
  
      if self.credentials_file and os.path.isfile(
          self.credentials_file
      ):
          copyfile(self.credentials_file, secret_file)
          return True
      return False
  
imports: import json
  from shutil import copyfile
  from collections import OrderedDict
  import requests
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
  from mindsdb.integrations.utilities.sql_utils import extract_comparison_conditions
  from mindsdb.integrations.libs.api_handler import APIHandler, APITable
  from mindsdb_sql.parser import ast
  from mindsdb.utilities import log
  from mindsdb_sql import parse_sql
  from mindsdb.utilities.config import Config
  import os
  import time
  from typing import List
  import pandas
  from google.auth.transport.requests import Request
  from google.oauth2.credentials import Credentials
  from google_auth_oauthlib.flow import Flow
  from googleapiclient.discovery import build
  from googleapiclient.errors import HttpError
  from email.message import EmailMessage
  from base64 import urlsafe_b64encode, urlsafe_b64decode
  from .utils import AuthException, google_auth_flow, save_creds_to_file
label_desc: Use image node_id 2 for calling the GmailHandler obj's underlying member method code with example usage: obj._download_secret_file(secret_file) and returns: False, True, True