[ARX程序]：如果复制AcDb2dPolyline ?

ppengxm

当我查看帮助中的实体复制函数getTransformedCopy时，发现下面的提示：
Warning For AutoCAD built-in complex entities such as polylines, this function produces a shallow clone of the header entity only, which also owns the original set of "owned" entities (such as vertices for a polyline) which are then transformed by the xform matrix. This results in a corrupt drawing (two header entities owning the same set of "owned" entities) as well as transforming the original set of "owned" entities instead of a copied set.

这里好象是说，多段线实体不能通过该函数获得完全独立实体。请问高手我想复制一个独立的多段线实体，该如何做？