anchor.diff:  === Thymeleaf template engine
   
   To use Thymeleaf, you need to add the following _dependency_ to your project:
  -`io.vertx:vertx-web-templ-thymeleaf:3.3.3`. Create an instance of the Thymeleaf template engine
  +`io.vertx:vertx-web-templ-thymeleaf:3.4.0-SNAPSHOT`. Create an instance of the Thymeleaf template engine
   using: `io.vertx.ext.web.templ.ThymeleafTemplateEngine#create()`.
   
   When using the Thymeleaf template engine, it will by default look for
  
positive.code:   // although it might seem strange by running a loop with a switch we
    // make sure that the locale order of preference is preserved when
    // replying in the users language.
    for (Locale locale : rc.acceptableLocales()) {
      switch (locale.language()) {
        case "en":
          rc.response().end("Hello!");
          return;
  
negative.code: The event can be one of the following types:
  
  SOCKET_CREATED:: This event will occur when a new SockJS socket is created.
  SOCKET_IDLE:: This event will occur when SockJS socket is on idle for longer period of time than initially configured.
  SOCKET_CLOSED:: This event will occur when a SockJS socket is closed.
  SEND:: This event will occur when a message is attempted to be sent from the client to the server.
  PUBLISH:: This event will occur when a message is attempted to be published from the client to the server.
  