pub type PFN_vkGetCudaModuleCacheNV = unsafe extern "system" fn(_device: Device, _module: CudaModuleNV, _cache_size: *mut usize, _cache_data: *mut c_void) -> Result;
https://www.khronos.org/registry/vulkan/specs/latest/man/html/vkGetCudaModuleCacheNV.html