using System.Windows;
using Bindables.Wpf;

public partial class YourClass : DependencyObject
{
    private static readonly string DefaultValue = "Test";

    [DependencyProperty(typeof(string))]
    public static readonly DependencyProperty RegularProperty;

    // You can use any visibility modifier.
    [DependencyProperty(typeof(string))]
    private static readonly DependencyPropertyKey ReadOnlyPropertyKey;

    [DependencyProperty(typeof(string), OnPropertyChanged = nameof(PropertyChangedCallback), DefaultValueField = nameof(DefaultValue), Options = FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)]
    public static readonly DependencyProperty CustomizedProperty;

    private static void PropertyChangedCallback(DependencyObject obj, DependencyPropertyChangedEventArgs args)
    {
    }
}

// Generated by Bindables
using System.Windows;

#nullable enable

public partial class YourClass
{
    public string? Regular
    {
        get => (string?)GetValue(RegularProperty);
        set => SetValue(RegularProperty, value);
    }

    public static readonly DependencyProperty ReadOnlyProperty;

    public string? ReadOnly
    {
        get => (string?)GetValue(ReadOnlyProperty);
        private set => SetValue(ReadOnlyPropertyKey, value);
    }

    public string? Customized
    {
        get => (string?)GetValue(CustomizedProperty);
        set => SetValue(CustomizedProperty, value);
    }

    static YourClass()
    {
        RegularProperty = DependencyProperty.Register(
            nameof(Regular),
            typeof(string),
            typeof(YourClass),
            new FrameworkPropertyMetadata());

        ReadOnlyPropertyKey = DependencyProperty.RegisterReadOnly(
            nameof(ReadOnly),
            typeof(string),
            typeof(YourClass),
            new FrameworkPropertyMetadata());

        ReadOnlyProperty = ReadOnlyPropertyKey.DependencyProperty;

        CustomizedProperty = DependencyProperty.Register(
            nameof(Customized),
            typeof(string),
            typeof(YourClass),
            new FrameworkPropertyMetadata(DefaultValue, (FrameworkPropertyMetadataOptions)256, PropertyChangedCallback));
    }
}