invoke
abstract suspend operator fun invoke(serviceId: <Error class: unknown class>, conversationId: <Error class: unknown class>): <Error class: unknown class><ObserveIsServiceMemberResult>
This use case is responsible for observing if a service is member of given conversation.
Return
a Flow of ObserveIsServiceMemberResult with Success of a Qualified ID of Service in User table or NULL or an error.
Parameters
serviceId
contains service ID and Provider.
conversationId
ID of the conversation service will be seen, added or removed.