Issue #2249723 by andrei.dincu: xmlsitemap_sitemap_get_file() takes first argument as XmlSitemapInterface object
Issue #2249723 by andrei.dincu: xmlsitemap_get_current_chunk() takes XmlSitemapInterface object as first argument
Issue #2249723 by andrei.dincu: Set method controller for xmlsitemap.sitemap_xml route