Attempt to deserialise from the message object.
Attempt to deserialise from the message object. Only use this method instead of <--() if you want to not declare your parameters in the RouteSpec().
Extract the parameter from the target object.
Extract the parameter from the target object.
Extract the parameter from the target object. Throws on failure, but that shouldn't be a problem as the pre-validation stage for declared parameters and bodies handles the failure before user code is entered.
Attempt to deserialise from the message object.
Attempt to deserialise from the message object. Only use this method instead of <--() if you want to not declare your parameters in the RouteSpec().