getMilliseconds method
Implementation
double getMilliseconds() {
nanos = DateTime.now().microsecondsSinceEpoch - startNano;
millis = DateTime.now().millisecondsSinceEpoch - startMillis;
time = nanos / 1000.0;
time = ((millis - time) > 1.01 ? millis : time).toDouble();
return time;
}