code: @Override
  	public int compareTo(Object arg0) {
  		if (arg0 instanceof SimpleInterval) {
  			SimpleInterval that = (SimpleInterval)arg0;
  			return intervalName.compareTo(that.getIntervalName());
  		}
  		return 0;
  	}
docs: Comapres this to another Interval
  @return {@code 1} if this Interval's lower bound is lower than the argument's, {@code 0} if they are the same, {@code 1} otherwise