Parameter for returning results. Default is transfer full.

The callback is valid until first called.

NULL is ok, both for passing and for returning.

Default parameter value (for in case the shadows-to function has less parameters).

Don't free data after the code is done.

Parameter points to an array of items.

Generics and defining elements of containers and arrays.

Free data container after the code is done.

Free data after the code is done.

Override the parsed C type with given type