Lookup existing fields in annotations to catch non-optional attributes

bigbluebutton/api/attendee.py

@@ -189,7 +189,7 @@ class Attendee:
                     raise ValueError("createTime does not match actual meeting parameters")
             else:
                 snake_name = camel_to_snake(name)
-                if hasattr(cls, snake_name):
+                if snake_name in cls.__annotations__:
                     kwargs[snake_name] = to_field_type(cls, snake_name, value)
 
         return kwargs

bigbluebutton/api/meeting.py

@@ -227,7 +227,8 @@ class Meeting:
                 kwargs["meeting_name"] = value
             else:
                 snake_name = camel_to_snake(name)
-                kwargs[snake_name] = to_field_type(cls, snake_name, value)
+                if snake_name in cls.__annotations__:
+                    kwargs[snake_name] = to_field_type(cls, snake_name, value)
 
         return kwargs
 
@@ -258,5 +259,5 @@ class Meeting:
             else:
                 snake_name = camel_to_snake(name)
 
-                if hasattr(self, snake_name):
+                if hasattr(se:
                     setattr(self, snake_name, to_field_type(self, snake_name, value))