long current = System.currentTimeMillis();
int size = 10000000;
for (int i = 0; i < size; i++) {
analyzer.process(tree);
}
System.out.println(analyzer.getReport("cat"));
System.out.println(analyzer.getReport("server"));
System.out.println("Cost " + (System.currentTimeMillis() - current) / 1000);
// cost 26