Fix deprecated

Author: felix-zenk

onboardapis/train/de/db/__init__.py

@@ -10,9 +10,10 @@
 """
 from __future__ import annotations
 
-from .apis import ICEPortal, RegioGuide
+from .apis import ICEPortal, RegioGuide, ZugPortal
 
 __all__ = [
     "ICEPortal",
-    "RegioGuide"
+    "RegioGuide",
+    "ZugPortal",
 ]

onboardapis/train/de/db/apis.py

@@ -297,9 +297,11 @@ def current_station(self) -> TrainStation:
         return self.destination if station is None else station
 
 
-ZugPortal = deprecated(
+@deprecated(
+    deprecated_in='2.0.0rc3',
     removed_in='2.0.0',
     current_version=_package_version(),
     details='Renamed by DB. Use RegioGuide instead.'
-)(RegioGuide)
-"""Renamed by DB. Use RegioGuide instead."""
+)
+class ZugPortal(RegioGuide):
+    """Renamed by DB. Use RegioGuide instead."""