addSuspendingListener

fun <E> <ERROR CLASS><in E>.addSuspendingListener(server: <ERROR CLASS>, eventType: Class<E>, listener: suspend (E) -> Unit)
fun <E> <ERROR CLASS><in E>.addSuspendingListener(extension: <ERROR CLASS>, eventType: Class<E>, listener: suspend (E) -> Unit)

Adds a new suspendable listener to this event node.