code: public Response andTextBody(String text) {
          this.contentType = MediaType.PLAIN_TEXT_UTF_8.withoutParameters().toString();
          this.body = text;
          this.rendered = false;
  
          return this;
      }
docs: Sets the body of the response. If a body is added, no template rendering will be
  performed. The content type "text/plain" will be used.
  
  @param text The text for the response
  
  @return A response object {@link io.mangoo.routing.Response}