update

Author: vegeris

slack_sdk/models/basic_objects.py

@@ -40,7 +40,7 @@ def validate_json(self) -> None:
             if callable(method) and hasattr(method, "validator"):
                 method()
 
-    def get_attribute(self, key: str):
+    def get_attribute(self: object, key: str):
         return getattr(self, key, None)
 
     def get_non_null_attributes(self) -> dict: