@SuppressWarnings("unchecked")
    static <ENTITY> FieldSet<ENTITY> noneOf(Class<ENTITY> classToken) {
        return (FieldSet<ENTITY>) FieldSetImpl.NONE;
    }
Returns a FieldSet that represents the empty set of fields of the given entity
@param classToken class token used to determine entity type
@param <ENTITY> the type of entity
@return a FieldSet that represents the empty set of fields of the given entity
runtime-parent/runtime-core/src/main/java/com/speedment/runtime/core/manager/FieldSet.java