How do you close a wormhole?

Could you possibly enlighten me on the intricate process of sealing a wormhole? I'm particularly fascinated by the scientific principles involved and any technological advancements that might aid in this endeavor. Could you elaborate on the necessary steps and equipment required to accomplish such a task? Furthermore, are there any safety measures that need to be taken into account while attempting to close a wormhole? I'm eager to learn more about this fascinating subject.