public override void Accept(IWallpaperDeployerConfigurationVisitor visitor)
 => visitor.Handle(this);
 public abstract TReturn Accept <TReturn>(IWallpaperDeployerConfigurationVisitor <TReturn> visitor);
 public override TReturn Accept <TReturn>(IWallpaperDeployerConfigurationVisitor <TReturn> visitor)
 => visitor.Handle(this);
 public abstract void Accept(IWallpaperDeployerConfigurationVisitor visitor);