All field classes and FieldID.
This library does not include field impl classes. field_impls.dart exports this library as well as the field impls.
- A single unit of output from a Bloc. [...]
- A unique identifer for a Field/FieldImpl. [...]
- A wrapper for Field that does not expose memebers that should not be accessed outside of a Bloc.
- A single unit of output from a StateBloc with added state management capabilities whe registered with a StateBlocImpl. [...]