pub unsafe extern "C" fn gst_type_find_helper_for_data_with_extension(
    obj: *mut GstObject,
    data: *const u8,
    size: size_t,
    extension: *const c_char,
    prob: *mut GstTypeFindProbability
) -> *mut GstCaps
This is supported on crate feature v1_16 only.