@Test
public void testPreferenceBinding_1() throws Exception {

	final String result = "{}";
	ObjectMapper mapper = JSonBindingUtils.createObjectMapper();
	Preference pref = new Preference( null, null, null );
	StringWriter writer = new StringWriter();
	mapper.writeValue( writer, pref );
	String s = writer.toString();
	Assert.assertEquals( result, s );
}