the behavior of ProcessManager, at the start of every frame (on the ENTER_FRAME event), it does the following:</p>
    
    <ol>
    <li>Process IAnimatedObject callbacks.</li>
    <li>Process any pending ticks by calling ITickedObject onTick zero or more times.</li>
    <li>Process any pending events.</li>
    </ol>
    
    <h3>Managing Time</h3>
    
    <p>There are several convenient values the ProcessManager calculates for you. These are virtualTime, which is milliseconds of simulated time s