[Obsolete]
public SKPaintGLSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.GRBackendRenderTargetDesc renderTarget);

[Obsolete]
public SKPaintGLSurfaceEventArgs (SkiaSharp.SKSurface surface, SkiaSharp.GRBackendRenderTarget renderTarget, SkiaSharp.GRSurfaceOrigin origin, SkiaSharp.SKColorType colorType, SkiaSharp.GRGlFramebufferInfo glInfo);

[Obsolete]
public SkiaSharp.GRBackendRenderTargetDesc RenderTarget { get; }