diff --git a/superset/config.py b/superset/config.py
index 8a85d14cd5da..630fbef9030a 100644
--- a/superset/config.py
+++ b/superset/config.py
@@ -301,10 +301,11 @@ def _try_json_readsha(filepath, length):  # pylint: disable=unused-argument
 # role-based features, or a full on A/B testing framework.
 #
 # from flask import g, request
-# def GET_FEATURE_FLAGS_FUNC(feature_flags_dict):
-#     feature_flags_dict['some_feature'] = g.user and g.user.id == 5
+# def GET_FEATURE_FLAGS_FUNC(feature_flags_dict: Dict[str, bool]) -> Dict[str, bool]:
+#     if hasattr(g, "user") and g.user.is_active:
+#         feature_flags_dict['some_feature'] = g.user and g.user.id == 5
 #     return feature_flags_dict
-GET_FEATURE_FLAGS_FUNC = None
+GET_FEATURE_FLAGS_FUNC: Optional[Callable[[Dict[str, bool]], Dict[str, bool]]] = None
 
 
 # ---------------------------------------------------