Issue #2249723 by andrei.dincu: Remove xmlsitemap_switch_user() and xmlsitemap_restore_user() from xmlsitemap.module
Issue #2249723 by andrei.dincu: Added variables and methods documentation in XmlSitemapGeneratorInterface, XmlSitemapGeneratorService, XmlSitemapIndexWriter, XmlSitemapWriter and xmlsitemap_engines.module