ApplyEventsConcurrently takes a list of events and applies the given applyEvent function to each event in the list.

ApplyEventsSequentially takes a list of events and applies the given applyEvent function to each event in the list.

The NullActive module is an ActiveModule that ignores all incoming events and never produces any events.

The NullPassive module is a PassiveModule that ignores all incoming events.

Module generalizes the ActiveModule and PassiveModule types.

The Modules structs groups the modules a Node consists of.