code: @Get("/hello/{name}")
      public String hello(
              @Size(min = 3, max = 10, message = "name should have between 3 and 10 characters")
              @Param String name) {
          return String.format("Hello, %s! This message is from Armeria annotated service!", name);
      }
docs: An example in order to show how to use validation framework in an annotated HTTP service.