@Override
    public <U> Comparator<ENTITY> thenComparing(
            Function<? super ENTITY, ? extends U> keyExtractor,
            Comparator<? super U> keyComparator) {

        return asCombined().thenComparing(keyExtractor, keyComparator);
    }
Abstract base implementation of {@link FieldComparator}

@author Emil Forslund
@since  3.0.11
runtime-parent/runtime-field/src/main/java/com/speedment/runtime/field/internal/comparator/AbstractFieldComparator.java