/**
  * Returns the mileage expense date if it exists
  *
  * @see
  *     org.kuali.kfs.module.tem.document.TravelDocument#getEffectiveDateForPerDiem(org.kuali.kfs.module.tem.businessobject.PerDiemExpense)
  */
 @Override
 public Date getEffectiveDateForPerDiem(PerDiemExpense expense) {
   if (expense != null && expense.getMileageDate() != null) {
     return getEffectiveDateForPerDiem(expense.getMileageDate());
   }
   return null;
 }
 /**
  * Returns the "mileage date" on the expense if it exists
  *
  * @see
  *     org.kuali.kfs.module.tem.document.TravelDocument#getEffectiveDateForMileageRate(org.kuali.kfs.module.tem.businessobject.PerDiemExpense)
  */
 @Override
 public Date getEffectiveDateForMileageRate(PerDiemExpense expense) {
   if (expense != null && expense.getMileageDate() != null) {
     return new java.sql.Date(expense.getMileageDate().getTime());
   }
   return null;
 }