pub unsafe extern "C" fn g_resolver_lookup_by_name_with_flags_async(
    resolver: *mut GResolver,
    hostname: *const c_char,
    flags: GResolverNameLookupFlags,
    cancellable: *mut GCancellable,
    callback: GAsyncReadyCallback,
    user_data: gpointer
)
Available on crate feature v2_60 only.