def _buildItemOrNone(self, elem, cls=None, initpath=None):
try:<EOL><INDENT>return self._buildItem(elem, cls, initpath)<EOL><DEDENT>except UnknownType:<EOL><INDENT>return None<EOL><DEDENT>
Calls :func:`~plexapi.base.PlexObject._buildItem()` but returns
            None if elem is an unknown type.