com.sun.star.ucb.HierarchyContentProvider vnd.sun.star.hier com.sun.star.ucb.FileContentProvider file com.sun.star.ucb.WebDAVContentProvider http com.sun.star.ucb.WebDAVContentProvider vnd.sun.star.webdav com.sun.star.help.XMLHelp vnd.sun.star.help com.sun.star.ucb.FTPContentProvider ftp com.sun.star.ucb.WebDAVContentProvider dav com.sun.star.ucb.PackageContentProvider vnd.sun.star.pkg com.sun.star.ucb.ExpandContentProvider vnd.sun.star.expand com.sun.star.ucb.TransientDocumentsContentProvider vnd.sun.star.tdoc com.sun.star.ucb.PackageContentProvider vnd.sun.star.zip com.sun.star.ucb.WebDAVContentProvider https com.sun.star.ucb.WebDAVContentProvider davs com.sun.star.ucb.ExtensionContentProvider vnd.sun.star.extension com.sun.star.ucb.CmisContentProvider vnd.libreoffice.cmis com.sun.star.ucb.GIOContentProvider .*