@Test
 public void testToXmlNoNullsTwoArgs() {
   List<CommandArgument<?>> args = new ArrayList<CommandArgument<?>>();
   args.add(CommandArgument.newCommandArgument("arg1", Type.INTEGER, 10));
   args.add(CommandArgument.newCommandArgument("arg2", Type.PERCENT, "50%"));
   subject = new ClientCommandMessage(parameters, 0, "command", 0, args);
   StringBuilder builder = new StringBuilder();
   try {
     subject.toXml(builder, 0);
   } catch (XmlFormatException e) {
     fail(e.getMessage());
   }
   String expected =
       "content-type:command-client\n"
           + "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
           + "<message >\n"
           + "\t<parameters >\n"
           + "\t\t<parameter name=\"version\" value=\"0.0\" />\n"
           + "\t\t<parameter name=\"session-key\" value=\"\" />\n"
           + "\t</parameters>\n"
           + "\t<content >\n"
           + "\t\t<command node-id=\"0\" name=\"command\" command-id=\"0\" >\n"
           + "\t\t\t<argument name=\"arg1\" type=\"integer\" value=\"10\" />\n"
           + "\t\t\t<argument name=\"arg2\" type=\"percent\" value=\"50.0%\" />\n"
           + "\t\t</command>\n"
           + "\t</content>\n"
           + "</message>\n";
   String actual = builder.toString();
   assertEquals(expected, actual);
 }
 @Test
 public void testToXmlNoNullsNoArgs() {
   List<CommandArgument<?>> args = new ArrayList<CommandArgument<?>>();
   subject = new ClientCommandMessage(parameters, 0, "command", 0, args);
   StringBuilder builder = new StringBuilder();
   try {
     subject.toXml(builder, 0);
   } catch (XmlFormatException e) {
     fail(e.getMessage());
   }
   String expected =
       "content-type:command-client\n"
           + "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
           + "<message >\n"
           + "\t<parameters >\n"
           + "\t\t<parameter name=\"version\" value=\"0.0\" />\n"
           + "\t\t<parameter name=\"session-key\" value=\"\" />\n"
           + "\t</parameters>\n"
           + "\t<content >\n"
           + "\t\t<command node-id=\"0\" name=\"command\" command-id=\"0\" />\n"
           + "\t</content>\n"
           + "</message>\n";
   String actual = builder.toString();
   assertEquals(expected, actual);
 }