var key=e.target.id+"";
if(key.length==0){// ancestor tree until you get to the end (meaning this.surface)var p=e.target.parentNode;
var node=this.surface.getEventSource();
while(p && p.id.length==0&& p!=node){
p=p.parentNode;
}
key=p.id;
}returnthis._get(key);