// Since returns the time elapsed since t.
Since returns the time elapsed since t.
// Since returns the time elapsed since t .
func (s *Simulator) Since(t time.Time) time.Duration {
	s.Lock()
	defer s.Unlock()
	return s.now.Sub(t)
}
func ( s * Simulator ) Since ( t time . Time ) time . Duration { s . Lock ( ) defer s . Unlock ( ) return s . now . Sub ( t ) }
Since returns the time elapsed since t.
Since returns the time elapsed since t .