it is possible to declare your own JSR305 annotation like described in https://stackoverflow.com/questions/7658353/is-parametersarenonnullbydefault-applies-to-method-return-values-too/13429092#13429092
it is possible to declare your own JSR305 annotation like described in
https://stackoverflow.com/questions/7658353/is-parametersarenonnullbydefault-applies-to-method-return-values-too/13429092#13429092