diff -r 0e2b05057c97 -r a0f15cb8c730 chat/model/src/main/java/org/apidesign/html/chatserver/model/MessageImpl.java
--- a/chat/model/src/main/java/org/apidesign/html/chatserver/model/MessageImpl.java	Thu Aug 14 07:51:33 2014 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,59 +0,0 @@
-/**
- * The MIT License (MIT)
- *
- * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-package org.apidesign.html.chatserver.model;
-
-import net.java.html.json.ComputedProperty;
-import net.java.html.json.Model;
-import net.java.html.json.Property;
-
-/** Generic model of communication between browser and a chat server.
- * The same code is then used on the server, on the client and even in unit 
- * tests.
- * 
- * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
- */
-@Model(className = "Message", properties = {
-    @Property(name = "user", type = String.class),
-    @Property(name = "comment", type = String.class),
-    @Property(name = "since", type = long.class)    
-})
-class MessageImpl {
-    @ComputedProperty static String at(long since) {
-        long delta = since / 1000;
-        if (delta <= 0) {
-            return "Boot-time";
-        }
-        if (delta < 60) {
-            return delta + "s";
-        }
-        delta /= 60;
-        return delta + "min";
-    }
-
-    @Model(className = "Query", properties = {
-        @Property(name = "messages", type = Message.class, array = true)
-    })
-    class QryMsgs {
-    }
-}