setup_logging
Description:
Setups logging for the this.
 The logging_level can be one of: "all" - log whole raw communication; "body" - the same as "all"; "headers" - log the headers
      only; "min" - minimal logging; "1" - the same as "all". Any other value, including null, disables logging.
Use get_log_level to get current log level.
Parameters:
| this | an SoupSession | 
| logging_level | logging level to setup, or  |