bug: experiment.delete/undelete are methods, not properties

Author: zbjornson

cellengine/resources/experiment.py

@@ -189,17 +189,15 @@ def clone(self, props: Optional[Dict[str, Any]] = None) -> Experiment:
         """
         return ce.APIClient().clone_experiment(self._id, props)
 
-    @property
-    def delete(self):
+    def delete(self) -> None:
         """Marks the experiment as deleted.
 
         Deleted experiments are permanently deleted after approximately
         7 days. Until then, deleted experiments can be recovered.
         """
         self.deleted = datetime.today()
 
-    @property
-    def undelete(self):
+    def undelete(self) -> None:
         """Clear a scheduled deletion."""
         if self.deleted:
             del self.deleted