[xwiki-users] Xml-rpc modification (adding a method)

Dear Users, I have a problem with Xwiki's XMLRPC api. I'm using XWiki 4.0 and I want to add my own methods. I've read here http://www.mail-archive.com/users@xwiki.org/msg08285.html that I can implement them in XWikiXmlRpcApi and XWikiXmlRpcApiImpl. I've found the interface here: https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwi… But I couldn't find its implementation. After some googling I discovered it here: xwiki-platform-core/xwiki-platform-oldcore/src/main/java/com/xpn/xwiki/xmlrpc/XWikiXmlRpcApiImpl.java and here is the source: http://permalink.gmane.org/gmane.comp.web.wiki.xwiki.scm/127394 I presume that the implementation is deprecated (it's in "oldcore" folder). My question is: is this interface also deprecated? How do I add a method to Xwiki's XMLRPC? -- Regards Patricia Sz.