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