It seems that according to the spec, meeting:message predicate is required to link a chat channel with a message. However, in the channel schema diagram and two examples, wf:message is used instead.
It's also worth noting that meeting vocabulary does not contain the message predicate, whereas wf vocabulary does.
It seems that according to the spec,
meeting:messagepredicate is required to link a chat channel with a message. However, in the channel schema diagram and two examples,wf:messageis used instead.It's also worth noting that
meetingvocabulary does not contain themessagepredicate, whereaswfvocabulary does.