pub unsafe extern "C" fn CPLHashSetForeach(
set: *mut CPLHashSet,
fnIterFunc: CPLHashSetIterEltFunc,
user_data: *mut c_void,
)pub unsafe extern "C" fn CPLHashSetForeach(
set: *mut CPLHashSet,
fnIterFunc: CPLHashSetIterEltFunc,
user_data: *mut c_void,
)