public Money getAdministrativeOfficeFeeAmount() { return getPostingRuleForAdministrativeOfficeFee(new DateTime()).getFixedAmount();
public Money getAdministrativeOfficeFeeAmount(DateTime startDate, DateTime endDate) { return getPostingRuleForAdministrativeOfficeFee(startDate, endDate).getFixedAmount();
    public Money getAdministrativeOfficeFeeAmount() {	return getPostingRuleForAdministrativeOfficeFee(new DateTime()).getFixedAmount();    }