SLD REST Service

My question is related to successful deployment of the SLD REST Service Community extension at the GeoServer REST APIs, and how to access related end-points.

After copying extension’s JAR files to WEB-INF/lib (Tomcat servlet), seems like extension is not deployed. As stated at https://docs.geoserver.org/latest/en/user/extensions/sldservice/index.html – I should be able to access directory: /sldservice/ – but it does NOT exists !

Maybe, I’ve missed something at the installation procedure of this extension…?
I really need this service, where to access via end-points each particular SLD (e.g. to have a link to the SLD). Could You please provide some help?