GH-1433 Added docs for scheduled task for PollableMessageSource

docs/src/main/asciidoc/spring-cloud-stream.adoc

@@ -726,6 +726,20 @@ public ApplicationRunner poller(PollableMessageSource destIn, MessageChannel des
 }
 ----
 
+A less manual and more Spring-like alternative would be to configure a scheduled task bean. For example,
+
+[source,java]
+----
+
+@Scheduled(fixedDelay = 5_000)
+public void poll() {
+	System.out.println("Polling...");
+	this.source.poll(m -> {
+		System.out.println(m.getPayload());
+
+	}, new ParameterizedTypeReference<Foo>() { });
+}
+----
 The `PollableMessageSource.poll()` method takes a `MessageHandler` argument (often a lambda expression, as shown here).
 It returns `true` if the message was received and successfully processed.
 

pom.xml

@@ -28,7 +28,7 @@
 		<reactor.version>Californium-RELEASE</reactor.version>
 		<kryo-shaded.version>3.0.3</kryo-shaded.version>
 		<objenesis.version>2.1</objenesis.version>
-		<spring-cloud-function.version>2.0.1.RELEASE
+		<spring-cloud-function.version>2.0.2.BUILD-SNAPSHOT
 		</spring-cloud-function.version>
 
 		<maven-checkstyle-plugin.failsOnError>true</maven-checkstyle-plugin.failsOnError>