FastFormArrayItemBuilder<T> typedef
FastFormArrayItemBuilder<T> =
Widget Function(UniqueKey key, int index, FastFormArrayState<T> field)
Signature for building a single array item.
The key
should always be passed to the superclass constructor of the
Widget that is returned from the builder to preserve the state across
widget trees when array items are moved around.
see https://medium.com/flutter/keys-what-are-they-good-for-13cb51742e7d
Implementation
typedef FastFormArrayItemBuilder<T> = Widget Function(
UniqueKey key, int index, FastFormArrayState<T> field);