How to turn Events into Commands with Behaviors in SfListView?

public class ContactsViewModel
{
        Command<ItemTappedEventArgs> tapCommand;
 
        public Command<ItemTappedEventArgs> TapCommand
        {
            get { return tapCommand; }
            protected set { tapCommand = value; }
        }
 
        public ContactsViewModel()
        {
            tapCommand = new Command<Syncfusion.ListView.XForms.ItemTappedEventArgs>(OnTapped);
        }
 
        ///<summary>
        ///To display tapped item content
        ///</summary>
        public void OnTapped(ItemTappedEventArgs eventArgs)
        {
            var name =(eventArgs.ItemData as Contacts).ContactName;
            var number = (eventArgs.ItemData as Contacts).ContactNumber;
            var display = Application.Current.MainPage.DisplayAlert(name, "Number:"+number, "Ok");
        }
}

<syncfusion:SfListView x:Name="listView" >
  <syncfusion:SfListView.Behaviors>
    <local:EventToCommandBehavior EventName="ItemTapped"
                                  Command="{Binding TapCommand}"
                                  Converter="{StaticResource EventArgs}" >
    </local:EventToCommandBehavior>
  </syncfusion:SfListView.Behaviors>
</syncfusion:SfListView>