pub type UmkaMakeStruct = Option<unsafe extern "C" fn(umka: *mut Umka, type_: *const UmkaType) -> *mut c_void>;
pub enum UmkaMakeStruct { None, Some(unsafe extern "C" fn(*mut tagUmka, *const tagType) -> *mut c_void), }
No value.
Some value of type T.
T