Gets or sets whether the user may delete this group without removing any members.
            
            
            
            
            
            
            
            
            public bool Ungroupable {get; set;}
             
        
             
        
            
            
            Property Value
The default value is true. The value is actually stored on the 
VisualElement. One normally sets it by setting or data-binding the attached property on the root element of the DataTemplate.