create Sub Context
fun <BC : BehaviourContext> BC.createSubContext(scope: CoroutineScope = LinkedSupervisorScope(), triggersHolder: TriggersHolder = this.triggersHolder, updatesUpstreamFlow: Flow<Update> = allUpdatesFlow): BC
Creates new BehaviourContext using its BehaviourContext.copy method
Parameters
updates Filter
This param will not be used anymore