How to save trained Q-Network by RL-DQN?

I would like to load the trained Q-Network in rlQValueRepresetation.

How can I save the pre-trained Q-network.

I know that DQN agent can be saved with rlTrainingOptions. but I could not confirm pre-trained Q-network.

Due to my lack of confirmation, if it is possible to save pre-trained Q-Network in rlTrainingOptions, could you please tell me how to load the Q-Network?