This repo was used in enketo-express-oc prior to version 1.65.0.oc-3 (1st of May. 2018). Since then it has been replaced by https://github.com/OpenClinica/enketo-xpath-extensions-oc.
This repository can be removed when it is certain there are no more production deployments of older versions of enketo-express-oc around.