pub trait NvCoverageReductionModeExtension: DeviceV1_0 {
const METADATA: Extension = NV_COVERAGE_REDUCTION_MODE_EXTENSION;
// Provided method
unsafe fn get_physical_device_supported_framebuffer_mixed_samples_combinations_nv(
&self,
physical_device: PhysicalDevice
) -> VkResult<Vec<FramebufferMixedSamplesCombinationNV>> { ... }
}