rem: EchoCore.Arrays.removeDuplicates(this._removedDescendantIds); 
add: if (this._removedDescendantIds != null) { EchoCore.Arrays.removeDuplicates(this._removedDescendantIds); } 
context: EchoApp.Update.ComponentUpdate.prototype._appendRemovedDescendants = function(update) {    // Append removed descendants.    if (update._removedDescendantIds != null) {        if (this._removedDescendantIds == null) {            this._removedDescendantIds = new Array();        }        for (var x in update._removedDescendantIds) {            this._removedDescendantIds.push(x);        }    }        // Append removed children.    if (update._removedChildIds != null) {        if (this._removedDescendantIds == null) {            this._removedDescendantIds = new Array();        }        for (var x in update._removedChildIds) {            this._removedDescendantIds.push(x);        }    }        EchoCore.Arrays.removeDuplicates(this._removedDescendantIds);};
meta: 600	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/600/d8cab3454fc291113251077f69223a334894593e/Application.js/buggy/src/webcontainer/java/nextapp/echo/webcontainer/resource/js/Application.js