'Return the unicode serialization of myself.'

def to_unicode(self):

    container_len = (len(self.CONTAINER_TAG) + 2)
    walker = getTreeWalker(self.TREEBUILDER)
    stream = walker(self._root)
    serializer = HTMLSerializer(quote_attr_values=True, omit_optional_tags=False)
    return serializer.render(stream)[container_len:((- container_len) - 1)]
