public partial class TestClass
{
	// Attached the new attribute to a dummy property
	[AttachedBindableProperty]
	public partial string? Text { get; set; } = "Hello World";
}

// Use the dummy property to extract type and name and generate the attached property
public partial class TestClass
{
	public partial string? Text
	{
		get => field;
		set => field = value;
	}
	/// <summary>
	/// Attached BindableProperty for the Text property.
	/// </summary>
	public static readonly global::Microsoft.Maui.Controls.BindableProperty TextProperty = global::Microsoft.Maui.Controls.BindableProperty.CreateAttached("Text", typeof(string), typeof(TestNamespace. TestClass),(string?)"Hello World", (Microsoft.Maui.Controls.BindingMode)0, null, null, null, null, null);
	/// <summary>
	/// Gets Text for the <paramref = "bindable"/> child element.
	/// </summary>
	public static string? GetText(global::Microsoft.Maui.Controls.BindableObject bindable) => (string)bindable.GetValue(TextProperty);
	/// <summary>
	/// Sets Text for the <paramref = "bindable"/> child element.
	/// </summary>
	public static void SetText(global::Microsoft.Maui.Controls.BindableObject bindable, string? value) => bindable.SetValue(TextProperty, value);
}

public partial class TestClass
{
	[AttachedBindableProperty]
	public static string? GetText(BindableObject view)
	{
		return (string?)view.GetValue(TextProperty);
	}
	[AttachedBindableProperty]
	public static void SetText(BindableObject view, string? value)
	{
		view.SetValue(TextProperty, value);
	}
}

// Generate the attached property
public partial class TestClass
{
    /// <summary>
    /// Attached BindableProperty for the Text property.
    /// </summary>
    public static readonly global::Microsoft.Maui.Controls.BindableProperty TextProperty = global::Microsoft.Maui.Controls.BindableProperty.CreateAttached("Text", typeof(string), typeof(TestNamespace. TestClass),(string?)"Hello World", (Microsoft.Maui.Controls.BindingMode)0, null, null, null, null, null);}

// SG Code
	public static void SetText(BindableObject view, string? value)
	{
                BeforeSet(view, ref value);
		view.SetValue(TextProperty, value);
                AfterSet(view, value);
	}
        partial void BeforeSet(BindableObject view, ref string? value);
        partial void AfterSet(BindableObject view, string? value);

// User code
partial void BeforeSet(BindableObject view, string? value)
{
     if (!decimal.TryParse(value, out var money))
            value = string.Empty;
    
     value = $"R${money}";
}

public partial class TestClass
{
    [AttachedBindableProperty]
    public static partial Func<BindableObject, string?> GetText { get; }
    [AttachedBindableProperty]
    public static partial Action<BindableObject, string?> SetText { get; }
}

public partial class TestClass
{
    public static readonly global::Microsoft.Maui.Controls.BindableProperty TextProperty = global::Microsoft.Maui.Controls.BindableProperty.CreateAttached("Text", typeof(string), typeof(TestNamespace.TestClass), (string?)"Hello World", (Microsoft.Maui.Controls.BindingMode)0, null, null, null, null, null);
    public static partial Func<BindableObject, string?> GetText { get => field; } = new((bindable) => (string)bindable.GetValue(TextProperty));
    public static partial Action<BindableObject, string?> SetText { get => field; } = new((bindable, value) => bindable.SetValue(TextProperty, value));
}

public partial class TestClass
{
    [AttachedBindableProperty]
    public static partial AttachedBindablePropertyGetter<string?> GetText { get; }
    [AttachedBindableProperty]
    public static partial AttachedBindablePropertySetter<string?> SetText { get; }
}

public partial class TestClass
{
    public static readonly global::Microsoft.Maui.Controls.BindableProperty TextProperty = global::Microsoft.Maui.Controls.BindableProperty.CreateAttached("Text", typeof(string), typeof(TestClass), (string?)default);
    public static partial AttachedBindablePropertyGetter<string?> GetText { get => field; } = new((BindableObject view) =>
    {
        return (string?)view.GetValue(TextProperty);
    });
    public static partial AttachedBindablePropertySetter<string?> SetText { get => field; } = new((bindable, value) =>
    {
        bindable.SetValue(TextProperty, value);
    });
}

public delegate T AttachedBindablePropertyGetter<T>(BindableObject view);
public delegate void AttachedBindablePropertySetter<T>(BindableObject view, T value);