setter property

Future<void> Function(String, T) setter

The asynchronous function to set a value by key, accepting a Future<void> return.

This field is final and required, enabling custom storage logic (e.g., API updates or local persistence). Invoked by onSetValue; no specific error handling is enforced here, but it should be robust for form reliability.

Implementation

final Future<void> Function(String, T) setter;