Description
To maintain backward compatibility between a 4.1 client and a 4.2 server, we need to make the cascade field in the protobuf optional, as the 4.1 client would not send this field.
To maintain backward compatibility between a 4.1 client and a 4.2 server, we need to make the cascade field in the protobuf optional, as the 4.1 client would not send this field.