How to use the @tensorflow/tfjs-node-gpu.add function in @tensorflow/tfjs-node-gpu

this.criticOptimizer.minimize(() => {
        // Compute Q targets for current states (y-i)
        const qTargets = tf.add(rewards, tf.mul(tf.mul(gamma, qTargetsNext), tf.sub(1, dones)));
        const qExpected = this.critic.predict([states, actions]);
        const criticLoss = tf.losses.meanSquaredError(qExpected, qTargets);
        // torch.nn.utils.clip_grad_norm_(self.critic.parameters(), 1)
        return criticLoss;
      });
      // Actor update