pub unsafe extern "C" fn GDALDEMProcessingOptionsSetProgress(
psOptions: *mut GDALDEMProcessingOptions,
pfnProgress: GDALProgressFunc,
pProgressData: *mut c_void,
)pub unsafe extern "C" fn GDALDEMProcessingOptionsSetProgress(
psOptions: *mut GDALDEMProcessingOptions,
pfnProgress: GDALProgressFunc,
pProgressData: *mut c_void,
)