How do I Use Xservices

@xservices

Good morning all

I've a question for you .. how do I use @xservices?

  In the various documents made available to us on the oracle portal and in the community, only the documentation is included in the implementation guide; "ok, this information is only for installing xservices and not for configuring or using it". Reading on this document:

Oracle®RetailXstore Point-of-ServiceRelease NotesRelease 7.1, I noticed on page 10/10 that there should be documentation @Xservices Guide (release 1) released in March 2015:

"The Xservices Guide provides information on working with the Xstore messaging interface at the developer level."

can someone tell me where to find it? It is not found, it does not exist. I urgently need it.