FiberFunc

This function prototype is used for spawning fibers.

A fiber is a lightweight, cooperative-multitasking feature where the fiber is given its own stack. The fiber runs until it reaches a point of suspension (using [method@Dex.Future.await] or similar) or exits the fiber.

When suspended, the fiber is placed onto a queue until it is runnable again. Once runnable, the fiber is scheduled to run from within whatever scheduler it was created with.

See [method@Dex.Scheduler.spawn]

Returns:

a [class@Dex.Future] or null