API change in elpa_deallocate()

Hi! Please excuse me if this is not the right place to post this, or if I have missed info in the docs.

elpa_deallocate() recently got another argument, namely the error code:

This will require existing interfaces to be updated as reported here:

Is there a recommended way to write interfaces that are compatible with both this and the older version? For example by accessing the version number in the preprocessor?