IconPreviewExample.swift

struct Icon_Previews : PreviewProvider {
    static var previews: some View {
        Icon()
            .previewHomescreen()
            .background(
                LinearGradient(
                    gradient: Gradient(colors: [.purple, .orange]),
                    startPoint: .bottom,
                    endPoint: .top
                )
            )
            .previewLayout(.sizeThatFits)
    }
}