public static unsafe void GetCompressedTexImage <T0>(this ArbTextureCompression thisApi, [Flow(FlowDirection.In)] TextureTarget target, [Flow(FlowDirection.In)] int level, [Count(Computed = "target, level"), Flow(FlowDirection.Out)] Span <T0> img) where T0 : unmanaged
 {
     // SpanOverloader
     thisApi.GetCompressedTexImage(target, level, out img.GetPinnableReference());
 }