apache-flex - Flash Builder (Flex 3.5) から「未定義」よりも優れた情報を取得するにはどうすればよいですか?

Question

以前、コンソール ウィンドウで "未定義" だけを見たことがありますが、それが何を意味するのか理解できました。今回はコンストラクタ for の先頭行で取得していCollectionEvent (super(type, bubbles, cancelable);ます)。への書き込みによってトリガーされたと思いますXMLListCollection。それについて未定義のものはないようです--thisポインターは見栄えがよく、すべてのパラメーターも同様です。かなり大きなスタック トレースがありますが、何が未定義かについての有用な情報はありません。次のデバッグ手順に進むにはどうすればよいですか?

未定義
    mx.events::CollectionEvent()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\events\CollectionEvent.as:116] で
    mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1245] で
    mx.collections::ListCollectionView/listChangeHandler() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] で
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] で
    mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] で
    mx.collections::XMLListAdapter/xmlNotification() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] で
    関数/() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] で
    AddressNode/DisplayLinesInLabels() [C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] で
    AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37]
    UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] で
    UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82]
    UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79]
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::ListCollectionView/dispatchEvent() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:879] で
    mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1248] で
    mx.collections::ListCollectionView/listChangeHandler() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] で
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] で
    mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] で
    mx.collections::XMLListAdapter/xmlNotification() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] で
    関数/() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] で
    AddressNode/DisplayLinesInLabels() [C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] で
    AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37]
    UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] で
    UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82]
    UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79]
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::ListCollectionView/dispatchEvent() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:879] で
    mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1248] で
    mx.collections::ListCollectionView/listChangeHandler() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] で
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] で
    mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] で
    mx.collections::XMLListAdapter/xmlNotification() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] で
    関数/() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] で
    AddressNode/DisplayLinesInLabels() [C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] で
    AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37]
    UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] で
    UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82]
    UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79]
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::ListCollectionView/dispatchEvent() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:879] で
    mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1248] で
    mx.collections::ListCollectionView/listChangeHandler() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1120] で
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で
    mx.collections::XMLListAdapter/itemUpdateHandler()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:523] で
    mx.collections::XMLListAdapter/itemUpdated()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:321] で
    mx.collections::XMLListAdapter/xmlNotification() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\collections\XMLListAdapter.as:620] で
    関数/() [C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\utils\XMLNotifier.as:81] で
    AddressNode/DisplayLinesInLabels() [C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressNode.as:192] で
    AddressTree/DisplayLinesInLabels()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\AddressTree.as:37]
    UMTAControl/ValidateDisplayLines_()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:90] で
    UMTAControl/OnChangeXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:82]
    UMTAControl/OnChXML()[C:\Users\PL\Documents\projects\AMHS-FlexProject\src\ubimex\modules\MTARoutingControl\UMTAControl.as:79]
    flash.events::EventDispatcher/dispatchEventFunction() で
    flash.events::EventDispatcher/dispatchEvent() で