@Override
    default SpeedmentPredicate<ENTITY> negate() {
        return t -> !test(t);
    }
Common interface for all metadata-rich predicates in the Speedment library.
Speedment predicates typically operates on an entity from a manager generated
by Speedment.

@author Emil Forslund
@since  3.1.2
runtime-parent/runtime-field/src/main/java/com/speedment/runtime/field/predicate/SpeedmentPredicate.java