public BigDecimal getRemainingAmount() {
    if (cumulativeAmount != null && originalAmount != null) {
      return originalAmount.subtract(cumulativeAmount);
    }
    return originalAmount;
  }
public BigDecimal getRemainingAmount ( ) { if ( cumulativeAmount != null && originalAmount != null ) { return originalAmount . subtract ( cumulativeAmount ) ; } return originalAmount ; }
@return The remaining order amount