| Overload | Description | 
|---|---|
| Addition(Debt,Debt) | Add x and y. | 
| Addition(Debt,TimeSpan) | Add debt and timeSpan and returns the result in a Debt value. | 
| Addition(TimeSpan,Debt) | Add timeSpan and debt and returns the result in a Debt value. | 
| Addition(Nullable<Debt>,Debt) | Add x and y. If x is null, returns null. | 
| Addition(Debt,Nullable<Debt>) | Add x and y. If y is null, returns null. | 
