Is your feature request related to a problem? Please describe.
Currently, we use a lot of features online that get read/written to online feature store but not offline. These don't use a transformation or UDF. Also, our online store is not available offline so it cannot be supported as a push source.

Describe the solution you'd like
I want to define NoOp UDF or feature_transformation in feature definition for these on demand feature views.

Describe alternatives you've considered
I have looked at passthrough python functions but even these get serialized and stored in registry.

Additional context
Any alternate solutions that I am not considering would be welcome.