def cleanBundles(self):
<EOL>self._server.query('<STR_LIT>')<EOL>
Poster images and other metadata for items in your library are kept in "bundle"
            packages. When you remove items from your library, these bundles aren't immediately
            removed. Removing these old bundles can reduce the size of your install. By default, your
            server will automatically clean up old bundles once a week as part of Scheduled Tasks.