The online documentation for the new V2 driver for the SAADC is missing and the links go nowhere.
i.e. https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v17.0.2%2Fgroup__nrfx__saadc__v2.html
This page entry contains two links, one for "More..." information, which does nothing, and a link to the API, which simply goes to a 404 not-found page.
The second issue is that whilst there are three example code files for the SAADC V2 on GitHub, none of the code contains any comments to say what the code does or why, so nobody but the person who wrote them can understand them.
(Ref: https://github.com/NordicSemiconductor/nrfx/wiki/nrfx-1.8.1-to-2.0.0#saadc-1 )
Please write out 100 times "C-Code is not self documenting" as penance for this sin.