trigger
fun trigger(triggerActionId: String, endpointConfigurer: GenericEndpointSpec<ServiceActivatingHandler>.() -> Unit = {})
fun trigger(triggerAction: MessageTriggerAction, endpointConfigurer: GenericEndpointSpec<ServiceActivatingHandler>.() -> Unit = {})
Populate a ServiceActivatingHandler instance to perform MessageTriggerAction and endpoint options from GenericEndpointSpec.