A
NULL is OK, both for passing and for returning.
Parameter points to an array of items.
E
Generics and defining elements of containers and arrays.
N
NULL may be passed as the value in, out, in-out; or as a return value.
O
Parameter for returning results. Default is transfer full.
S
The callback is valid until the GDestroyNotify argument is called.
T
Free data after the code is done.
Don't free data after the code is done.
Override the parsed C type with given type.