public static <T extends Model> T findLast(final Class<T> cls) {
		final String tableName = Reflection.getSimpleClassName(cls);
		final List<T> list = Model.where(cls, "_id=(select max(_id) from " + tableName + ")");
		T model = null;
		if (list != null && list.size() > 0) {
			model = list.iterator().next();
		}
		return model;
	}