from the coroutine example: ```/** * An extension...

# vertx

[withoutclass]

from the coroutine example:

/**
 * An extension method for simplifying coroutines usage with Vert.x Web routers
 */
fun Route.coroutineHandler(fn : suspend (RoutingContext) -> Unit) {
  handler { ctx ->
    launch(ctx.vertx().dispatcher()) {
      try {
        fn(ctx)
      } catch(e: Exception) {
        ctx.fail(e)
      }
    }
}