This content is part of a third party extension that is not supported by the Cake project. For more information about this extension see Cake.Mage.

public static void MageUpdateApplication(this ICakeContext context, UpdateApplicationSettings settings)

MageUpdateApplication(new UpdateApplicationSettings("./dist/WindowsFormsApplication1.manifest"){
    UseManifestForTrust = true,
    SupportUrl = new Uri("http://www.example.com")
});