const TraceTimer = require('trace-timer')
    timer = new TraceTimer('someName', null, false);
    const timer1 = new TraceTimer('someChild1', null, false);
    timer1.countSync(()=>clock.tick(100));
    const timer2 = new TraceTimer('someChild2', null, false);
    timer2.countAsync(async()=>clock.tick(100));
    timer.addChild(timer1);
    timer.addChild(timer2);
    console.log(timer);