add missing annotations (#443)

pystiche · Oct 28, 2020 · b0edd34 · b0edd34
1 parent dd34c10
commit b0edd34
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pystiche/enc/multi_layer_encoder.py b/pystiche/enc/multi_layer_encoder.py
@@ -15,7 +15,7 @@
 __all__ = ["MultiLayerEncoder", "SingleLayerEncoder"]
 
 
-def _future_warning(name):
+def _future_warning(name: str) -> None:
     msg = (
         f"The functionality of MultiLayerEncoder.{name} will change in the future. "
         f"If you depend on this functionality, "