public MarkupPercentDeterminationRule(MarkupPercentDeterminationRuleType type)
 {
     Type = type;
     MarkupPercentValue = null;
 }
 public MarkupPercentDeterminationRule(decimal markupPercentValue)
 {
     MarkupPercentValue = markupPercentValue;
     type = MarkupPercentDeterminationRuleType.Custom;
 }