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@ConsumeEvent can return `Uni<R>` if parameter is `T` but throws error for `Message<T>`

See original GitHub issue

Describe the bug

The “Using the event bus” documentation has examples of methods annotated with @ConsumesEvent returning void, R, and Uni<R>:

@ConsumeEvent("greeting")
public String consume(String name) {
    return name.toUpperCase();
}

@ConsumeEvent("greeting")
public Uni<String> consume2(String name) {
    return Uni.createFrom().item(() -> name.toUpperCase()).emitOn(executor);
}

Based on the examples I’d expect the same to work for Message<T>, but attempting to consume an event from EventBus.send or EventBus.request results in a NoSuchMethodError.

This occurs with both Kotlin and Java.

Expected behavior

A method annotated with @ConsumesEvent can return either void or Uni<R> regardless of whether the parameter is T or Message<T>.

Actual behavior

If the method parameter is Message<T>, the Vertx event bus only works if the return type is void.

2021-11-22 11:16:11,566 ERROR [io.qua.ver.cor.run.VertxCoreRecorder] (vert.x-eventloop-thread-2) Uncaught exception received by Vert.x: java.lang.NoSuchMethodError: 'void org.acme.Example.onMessageUni(io.vertx.core.eventbus.Message)'
        at org.acme.Example_VertxInvoker_onMessage_a71f19d99a55f26778e6ec15e5768a5d955c7f96.invokeBean(WebhookImportService_VertxInvoker_onMessageUni_a71f19d99a55f26778e6ec15e5768a5d955c7f96.zig:68)
        at io.quarkus.vertx.runtime.EventConsumerInvoker.invoke(EventConsumerInvoker.java:28)
        at io.quarkus.vertx.runtime.VertxRecorder$3$1.handle(VertxRecorder.java:118)
        at io.quarkus.vertx.runtime.VertxRecorder$3$1.handle(VertxRecorder.java:95)
        at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:50)
        at io.vertx.core.impl.DuplicatedContext.emit(DuplicatedContext.java:168)
        at io.vertx.core.eventbus.impl.MessageConsumerImpl.dispatch(MessageConsumerImpl.java:177)
        at io.vertx.core.eventbus.impl.HandlerRegistration$InboundDeliveryContext.next(HandlerRegistration.java:169)
        at io.vertx.core.eventbus.impl.HandlerRegistration$InboundDeliveryContext.dispatch(HandlerRegistration.java:134)
        at io.vertx.core.impl.AbstractContext.dispatch(AbstractContext.java:111)
        at io.vertx.core.eventbus.impl.HandlerRegistration.dispatch(HandlerRegistration.java:105)
        at io.vertx.core.eventbus.impl.MessageConsumerImpl.deliver(MessageConsumerImpl.java:183)
        at io.vertx.core.eventbus.impl.MessageConsumerImpl.doReceive(MessageConsumerImpl.java:168)
        at io.vertx.core.eventbus.impl.HandlerRegistration.lambda$receive$0(HandlerRegistration.java:56)
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Thread.java:829)

How to Reproduce?

Code

@ConsumeEvent("json")
fun onJsonObject(json: JsonObject) {
    println("[Void] Received JsonObject: ${json.encode()}")
}

@ConsumeEvent("jsonUni")
fun onJsonObjectUni(json: JsonObject): Uni<String> {
    println("[Uni] Received JsonObject: ${json.encode()}")
    return Uni.createFrom().item("JsonObject")
}

@ConsumeEvent("message")
fun onMessage(message: Message<JsonObject>) {
    println("[Void] Received message: [headers=${message.headers()}, body=${message.body().encode()}]")
}

@ConsumeEvent("messageUni")
fun onMessageUni(message: Message<JsonObject>): Uni<String> {
    println("[Uni] Received message: [headers=${message.headers()}, body=${message.body().encode()}]")
    return Uni.createFrom().item("Message")
}

// Elsewhere in the code
val json = JsonObject().put("name", "quarkus")
val options = DeliveryOptions().addHeader("version", "2.5.0.CR1")
bus.send("json", json)
bus.request<String>("jsonUni", json).awaitSuspending()
bus.send("message", json, options)
bus.request<String>("messageUni", json, options).awaitSuspending()

Output

2021-11-22 11:54:28,308 ERROR [io.qua.ver.cor.run.VertxCoreRecorder] (vert.x-eventloop-thread-6) Uncaught exception received by Vert.x: java.lang.NoSuchMethodError: 'void org.acme.Example.onMessageUni(io.vertx.core.eventbus.Message)'
        at org.acme.Example_VertxInvoker_onMessageUni_17549bde5566bd9bd4470ce93824889fee55004c.invokeBean(WebhookImportService_VertxInvoker_onMessageUni_17549bde5566bd9bd4470ce93824889fee55004c.zig:68)
... (rest of the stacktrace)
[Uni] Received JsonObject: {"name":"quarkus"}
[Void] Received message: [headers=version=2.5.0.CR1, body={"name":"quarkus"}]
[Void] Received JsonObject: {"name":"quarkus"}