+ long ret = bindings.UpdateFulfillHTLC_new(InternalUtils.check_arr_len(channel_id_arg, 32), htlc_id_arg, InternalUtils.check_arr_len(payment_preimage_arg, 32));
+ Reference.reachabilityFence(channel_id_arg);
+ Reference.reachabilityFence(htlc_id_arg);
+ Reference.reachabilityFence(payment_preimage_arg);