clearValueOnUnregister property
Whether to clear the internal value of a field when it is unregistered.
Defaults to false.
When set to true, the form builder will not keep the internal values
from disposed FormBuilderFields. This is useful for dynamic forms where
fields are registered and unregistered due to state change.
This setting will have no effect when registering a field with the same name as the unregistered one.
Implementation
final bool clearValueOnUnregister;