Nvidia's optical flow has no UpsampleCS.h refered by NvOFUtilsD3D12.cpp

In Nvidia’s optical flow 3, UpsampleCS.h is refered by NvOFUtilsD3D12.cpp, but is nowhere to be found. Where is it supposed to be ?

https://gitlab.com/nvidia/video/optical-flow-sdk/-/blob/master/Optical_Flow_SDK_3.0.15/Common/Utils/NvOFUtilsD3D12.cpp#L14

Then other fields are refered ( g_UpsampleCS ), which are likely from this header:

https://gitlab.com/nvidia/video/optical-flow-sdk/-/blob/master/Optical_Flow_SDK_3.0.15/Common/Utils/NvOFUtilsD3D12.cpp#L76

Hi.
This file UpsampleCS.h is generated while compiling DX11/DX12 samples. File is generated by compiling shader code. Sample compilation output from DX11 application:

2>Building Custom Rule C:/ path_to_nvof/Optical_Flow_SDK_3.0.15/NvOFBasicSamples/AppOFD3D11/CMakeLists.txt 2>compilation header save succeeded; see C:\path_to_nvof\Optical_Flow_SDK_3.0.15\NvOFBasicSamples\build\AppOFD3D11\UpsampleCS.h 2>compilation object save succeeded; see C:\path_to_nvof\Optical_Flow_SDK_3.0.15\NvOFBasicSamples\build\AppOFD3D11\Debug\shader.cso

Thanks.