public abstract class MapItem :
    MapDependencyObject,
    IOwnedElement,
    IMapItem,
    IMapItemCore,
    IMapDataItem,
    IMapItemAttributeOwner,
    IZIndexHolder,
    ITransformableItem,
    IEditableItemCore,
    IEditingBoundsSupport

Public MustInherit Class MapItem
    Inherits MapDependencyObject
    Implements IOwnedElement,
               IMapItem,
               IMapItemCore,
               IMapDataItem,
               IMapItemAttributeOwner,
               IZIndexHolder,
               ITransformableItem,
               IEditableItemCore,
               IEditingBoundsSupport