callable_wrapper fastmessage.callable_wrapper CallableWrapper CallableWrapper( *, fastmessage_handler, wrapped_callable, input_device_name, output_device_name=None ) a helper class that wraps a callable callable property callable the original callable that was passed to this wrapper input_device_name property input_device_name the input device name for this callable model property model the model that was created for this callable (if it has input params) output_device_name property output_device_name the default output device name for this callable