Avalonia/src/Avalonia.Diagnostics/Diagnostics/ViewModels/PropertyViewModel.cs

namespace Avalonia.Diagnostics.ViewModels
{
    internal abstract class PropertyViewModel : ViewModelBase
    {
        public abstract object Key { get; }
        public abstract string Name { get; }
        public abstract string Group { get; }
        public abstract string Value { get; set; }
        public abstract void Update();
    }
}