Spring Public method in RSocketMessageHandler to register any handler method

Right now RSocketMessageHandler can process only @MessageMapping methods when the handler class is marked with the @Controller.

Provide a hook which will allow us to register any handler with its own conditions. It is possible right now when we override RSocketMessageHandler and call its protected final registerHandlerMethod(), but it would be great to be able to register conditional handlers into a single RSocketMessageHandler, which in most cases is auto-configured by Spring Boot.

Thanks

P.S. For my use-case having a registerHandlerMethod() as public would be enough though. Even if it is going to have a restriction to be called only on startup during bean initialization phase.