ArrayList childList = this.topLevel.children;
ArrayList childList = this.topLevel.succesors;
	public void outputCode(PrintWriter out)	{	    this.topLevel.outputCode(out);	    	    ArrayList childList = this.topLevel.children;	    Iterator childIter = childList.iterator();	    	    while (childIter.hasNext())	    {	   		((GEStreamNode) childIter.next()).outputCode(out); 		    }	    	}