We have implement a Splunk App (Modular Input with Splunk Python SDK) which is running all the time. In the beginning the app received a token ("session key") which is used during the app execution to access services such as Splunk KV Store and Passwords store. Since this application is running all the time, there is a question regarding expiration of the token (session key again). So, does this token expire? In case the token does expire what method can the application use in order to refresh this token via the Splunk Python SDK?