wait
inline suspend fun <O : MessageContent> BehaviourContext.waitContentMessage(initRequest: Request<*>? = null, includeMediaGroups: Boolean = true, noinline errorFactory: NullableRequestBuilder<*> = { null }): Flow<CommonMessage<O>>
suspend fun BehaviourContext.waitContentMessage(initRequest: Request<*>? = null, errorFactory: NullableRequestBuilder<*> = { null }, includeMediaGroups: Boolean = true): Flow<CommonMessage<MessageContent>>