pub unsafe extern "C" fn gdk_pixbuf_save_to_streamv(
pixbuf: *mut GdkPixbuf,
stream: *mut GOutputStream,
type_: *const c_char,
option_keys: *mut *mut c_char,
option_values: *mut *mut c_char,
cancellable: *mut GCancellable,
error: *mut *mut GError,
) -> gboolean