CallImpl root = (CallImpl)getRoot(); return root.toString(maxDepth);
StringBuffer sb = new StringBuffer(); sb.append("CallGraph [ root = ");sb.append(rootCallID); sb.append(", maxDepth = ");sb.append(maxDepth);sb.append(" ]"); return sb.toString();
	public String toString(int maxDepth)	{		CallImpl root = (CallImpl)getRoot();		return root.toString(maxDepth);	}