OptionalclosedOptionalcontactThe e-mail the shopper left for customer service, if any.
OptionalhandoverThe handover to a person, while the status is waiting or human (otherwise null). Missing on
older servers.
With after, only the messages created after that time.
The order this conversation has proven access to, if any.
Why a closed conversation ended. "turn_limit": continue it with
createConversation({ continueFrom }). "ticket": it became a case for customer service, who reply by e-mail (tocontactEmail).