setFastTimeout (callback, delay, arg) {
    return new FastTimer(callback, delay, arg)
  }
The setFastTimeout() method sets a fastTimer which executes a function once
the timer expires.
@param {Function} callback A function to be executed after the timer
expires.
@param {number} delay The time, in milliseconds that the timer should
wait before the specified function or code is executed.
@param {*} [arg] An optional argument to be passed to the callback function
when the timer expires.
@returns {FastTimer}