code: public long getMillis(HazelcastProperty property) {
          TimeUnit timeUnit = property.getTimeUnit();
          return timeUnit.toMillis(getLong(property));
      }
docs: Returns the configured value of a {@link HazelcastProperty} converted to milliseconds.
  
  @param property the {@link HazelcastProperty} to get the value from
  @return the value in milliseconds
  @throws IllegalArgumentException if the {@link HazelcastProperty} has no {@link TimeUnit}