Sub-task
Major Description
*WHAT*
As a User i want to changing the keywords of an Email ( could be changing one or many keywords)
*How*
- The format of the keywords/mailboxIds properties means that when updating an Email, you can either replace the entire set of keywords/Mailboxes (by setting the full value of the property) or add/remove individual ones using the JMAP patch syntax (see [@!RFC8620], Section 5.3 for the specification and Section 5.7 for an example)
*Example*
- The client may send the whole object to the server:
[[ "Email/set", { "accountId": "x", "update": { "a": { "keywords": { "music": true, "beethoven": true, "chopin": true, "liszt": true, "rachmaninov": true } } } }, "0" ]]
Result should be:
`chopin` added
`mozart` removed
*Definition of done*:
Write integrations test for it in both case one or many keywords.
