rem: get mDragService() 
add: get: function (aFlavourSet, aRetrievalFunc, aAnyFlag) 
context:   get mDragService()    {      if (!this._mDS)         {          const kDSContractID = "@mozilla.org/widget/dragservice;1";          const kDSIID = Components.interfaces.nsIDragService;          this._mDS = Components.classes[kDSContractID].getService(kDSIID);        }      return this._mDS;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/20a2fec5eb6d825adbf1a1f61b35c1d23177bdeb/nsDragAndDrop.js/clean/xpfe/global/resources/content/nsDragAndDrop.js