ClassicAssist.Avalonia/ClassicAssist/UI/Misc/BindingProxy.cs

using System.Windows;

namespace ClassicAssist.Misc
{
    public class BindingProxy : Freezable
    {
        // Using a DependencyProperty as the backing store for Data.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty DataProperty = DependencyProperty.Register( "Data", typeof( object ),
            typeof( BindingProxy ), new UIPropertyMetadata( null ) );

        public object Data
        {
            get => GetValue( DataProperty );
            set => SetValue( DataProperty, value );
        }

        #region Overrides of Freezable

        protected override Freezable CreateInstanceCore()
        {
            return new BindingProxy();
        }

        #endregion
    }
}