* @param serviceInterface the YANG-generated interface of the RPC Service for which to register.
* @param implementation the implementation instance to register.
* @return a RoutedRpcRegistration instance which can be used to register paths for the RPC
* @param serviceInterface the YANG-generated interface of the RPC Service for which to register.
* @param implementation the implementation instance to register.
* @return a RoutedRpcRegistration instance which can be used to register paths for the RPC