get https://sandbox.billwerk.com/api/v1/contracts//cancellationpreview
Retrieves a cancellation preview for a contract for a regular cancellation, considering contract and notice periods of the booked PlanVariant.
Property EndDate describes the date at which the contract would be cancelled when doing a regular cancellation.
Property NextPossibleCancellationDate describes the date until which the contract can be cancelled using a regular cancellation achieving the next possible end date of the contract while adhering to the contract and notice periods configured.