Parameter for input and for returning results. Default is transfer full.

The callback is valid until first called.

This parameter is a 'user_data', for callbacks; many bindings can pass NULL here.

Generics and defining elements of containers and arrays.

Free data container after the code is done.

Override the parsed C type with given type.

Free data after the code is done.

Parameter points to an array of items.

Don't free data after the code is done.

The callback is valid only during the call to the method.

NULL is ok, both for passing and for returning.

Parameter for returning results. Default is transfer full.