Deprecation of NvAPI_VIO_SetConfig and NvAPI_VIO_SetCSC

It seems that all functionality related to NvAPI_VIO_SetConfig, NvAPI_VIO_SetCSC and similar functions has been completely removed in recent driver versions. I've been unable to find any replacements for this deprecated functionality. What is the currently recommended way to set NVVIOCOLORCONVERSION or NVVIOCONFIG to specific display connected to NVIDIA GPU?