WaitWithContext waits for the first action which will occur.

WaitWithContextAndChannel waits for the first action which will occur.

WaitWithContextAndChannelExt waits for the first action which will occur.

WaitWithContextAndTrigger waits for the first action which will occur.

WaitWithTrigger waits for the first action which will occur.

Condition is a synchronization utility used to wait until someone sets it.

Trigger is a synchronization utility used to wait (in a select statement) until someone triggers it.

TriggerGroup is a set of Trigger objects, all sharing a single trigger, but having individual Done() channels.