//tag::ref-doc[] = MQTT Source Source that enables receiving messages from MQTT. == Payload: * `String` if binary setting is `false` (default) * `byte[]` if binary setting is `true` == Options The **$$mqtt$$** $$source$$ has the following options: //tag::configuration-properties[link-to-catalog=true] https://github.com/spring-cloud/spring-functions-catalog/tree/main/supplier/spring-mqtt-supplier#configuration-options[See Spring Functions Catalog for configuration options]. //end::configuration-properties[] //end::ref-doc[]