code: def find_input_usage(self, full_usage_id):
          
          for report_id, report_obj in self.__input_report_templates.items():
              if full_usage_id in report_obj:
                  return report_id
          return None
docs: Check if full usage Id included in input reports set
          Parameters:
              full_usage_id       Full target usage, use get_full_usage_id
  
          Returns:
              Report ID as integer value, or None if report does not exist with
              target usage. Nottice that report ID 0 is a valid report.