code: def main():
      
      plugin = Register()
      if plugin.args.option == 'sql':
          plugin.sql_handle()
      elif plugin.args.option == 'database-used':
          plugin.database_used_handle()
      elif plugin.args.option == 'databaselog-used':
          plugin.database_log_used_handle()
      else:
          plugin.unknown("Unknown actions.")
docs: Register your own mode and handle method here.