I think the best way to do this is to copy the entire user model directly from the Sentry folder: e.g. SRC / Cartalyst / Sentry / Users / Eloquent / User.php
Copy this file to the model directory, then add it instead of Ardent instead of Model, since Ardent already extends the model.
This should work - although there may be some complications or corrections necessary for it to work, I am doing something similar using Toddish / Verify instead of Sentry.
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