def keys(self, min=None, max=None, limit=100, tags=None, users=None):
# secure
if tags is None and users is None:
matches = self.allowed_status_keys()
else:
matches = self.secure(
LLBTree.union(
self._query_mapping(self._tag_mapping, tags),
self._query_mapping(self._user_mapping, users),
))
return longkeysortreverse(matches, min, max, limit)
