Replacement of DataContextChanged handler defined locally for generic

DataContextChanged_CreateHandlerForAssigningVToVM.cs

    public class CarViewModel
    {
        public ICarView View { get; set; }

    }
    
//============================================================
// Before

    public class CarView : UserControl, ICarView
    {
        public CarView()
        {
            InitializeComponent();

            DataContextChanged += UserControl_DataContextChanged;
        }
        
        private void UserControl_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (e.OldValue is CarViewModel vm_old)
            {
                if (vm_old.View == this)
                    vm_old.View = null;
            } 
            if (e.NewValue is CarViewModel vm_new)
            {
                vm_new.View = this;
            }
        }
    }
//============================================================
// After

    public class CarView : UserControl, ICarView
    {
        public CarView()
        {
            InitializeComponent();

            DataContextChanged += CreateHandlerForAssigningVToVM<CarViewModel, ICarView>(m => m.View, (m, v) => m.View = v);
        }

        DependencyPropertyChangedEventHandler CreateHandlerForAssigningVToVM<VM, V>(Func<VM, V> vmViewGetter, Action<VM, V> vmViewSetter) where V : class
        {
            void DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
            {
                if (e.OldValue is VM vm_old)
                {
                    if (ReferenceEquals(vmViewGetter(vm_old), sender))
                        vmViewSetter(vm_old, null);
                }
                if (e.NewValue is VM vm_new)
                {
                    vmViewSetter(vm_new, (V)sender);
                }
            }

            return new DependencyPropertyChangedEventHandler(DataContextChanged);
        }
    }