What is the best way to update a document expiration to 0 (to not expire) using the php sdk?

PHP SDK
1

I have some documents with an expiration date in the future.

What is the best way to update the expiration of a document to not expire anymore? Are there any code examples?

2

To clear the expiration time, so that the document will not be deleted.

UPDATE default AS d SET META(d).expiration = 0;