Alternative of MD-SAL blueprint extension

There is extension of blueprint in MD-Sal which supports some extra functionality(elements) in blueprint xml which is listed in the link "https://www.cnblogs.com/FrankZhou2017/articles/7281558.html"

Objective: how to support below listed function according to the link in ODL-micro -

1. Global RPC registration
2. Acquisition of Global RPC
3. Routed RPC registration
4. Registration of NotificationListenser
5. clustered-app-config

FYI: implementation of ext blueprint source code path - "https://github.com/opendaylight/controller/tree/master/opendaylight/blueprint/src/main/java/org/opendaylight/controller/blueprint/ext"