class_docstr: Base class for all app integrations to be implemented for various services
docstr: Returns a format string to assist in formatting dates for this service
  
  Returns:
      str: A format string for formatting date/time values (ie: '%Y-%m-%dT%H:%M:%SZ')
docstr_tok: ["Returns","a","format","string","to","assist","in","formatting","dates","for","this","service","Returns",":","str",":","A","format","string","for","formatting","date\/time","values","(","ie",":","'","%","Y-","%","m-","%","dT","%","H",":","%","M",":","%","SZ","'",")"]
code: def date_formatter(cls):
      """Returns a format string to assist in formatting dates for this service
  
      Returns:
          str: A format string for formatting date/time values (ie: '%Y-%m-%dT%H:%M:%SZ')
      """
  
imports: from abc import ABCMeta, abstractmethod, abstractproperty
  from json import JSONDecodeError
  import time
  import boto3
  from botocore.exceptions import ClientError
  import requests
  from streamalert.apps.config import AppConfig
  from streamalert.apps.batcher import Batcher
  from streamalert.shared.logger import get_logger
label_desc: Use image node_id 10 for calling the AppIntegration obj's underlying member method code with example usage: obj.date_formatter(cls) without return types