/** Returns units. */
protected Unit[] getTimeUnits() {
return new Unit[]{
//new Unit("", "", "", ""),
new Unit("", "s", "Second", "Seconds"), /* default unit */
new Unit("msec", "ms", "Millisecond", "Milliseconds"),
new Unit("usec", "us", "Microsecond", "Microseconds"),
new Unit("sec", "s", "Second", "Seconds"),
new Unit("min", "m", "Minute", "Minutes"),
new Unit("hr", "h", "Hour", "Hours")
};
}