smkent
Permit sending null values
There are various places in the JMAP spec where null values should be allowed. Specific to my use case:
2.1 Mailbox/get This is a standard “/get” method as described in [@!RFC8620], Section 5.1. The ids argument may be null to fetch all at once.
Currently if you specify:
client.request(MailboxGet(ids=None))
the serializer class will elide the ids=null that the spec allows. This is because the serializer uses None as a default value and omits it as unspecified.
It seems there are a couple possible fixes. One is to distinguish between None and Unspecified for all models. This is a big, breaking API change, but possibly more correct. The other is to add a new type that specifically permits None that could me marked on some methods. This is less invasive.
