Trying to find code for enhanced shockburst on nrf24lu1p

I have been trying to build code for enhanced shockburst on an nrf24lu1p device. Unfortunately, I can't seem to find example programs or code for this device no matter where I look. 

I found a post that contains a code snippet that looks exactly like what I need. There appears to be code for sending shockburst packets and a nrf24lu1p.h file. Unfortunately, I can't seem to find this code anywhere.
https://devzone.nordicsemi.com/f/nordic-q-a/3965/esb-nrf24lu-and-nrf51822

Does anyone know where I can find this code or code like this?

Is there a way to find any of this on a modern version of the nRF Connect SDK? The current nRF Connect SDK version (v2.7.0) does not seem to recognize my nrf24lu1p as a valid device so Im wondering if it's no longer supported.

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