Serialization - dhtmlxTree Is there a way to omit deep bran

Basically deep of serialization can’t be controlled by API, so any changes must be made directly in code
You can look at next code line

dhtmlxtree.js , line 111

for (var i=0; i<itemNode.childsCount; i++)
            out+=this._serializeItem(itemNode.childNodes[i]);

this is code called recursive to itterate through all tree, so any kind of check can be added here to skip branches