default SpeedmentPredicate<ENTITY> notContains(String value) {
        return contains(value).negate();
    }
Returns a {@link java.util.function.Predicate} that will evaluate to
{@code true}, if and only if this Field <em>not contains</em> the given
value.

@param value to compare
@return a Predicate that will evaluate to {@code true}, if and only if
this Field <em>not contains</em> the given value

@see String#contains(java.lang.CharSequence)
runtime-parent/runtime-field/src/main/java/com/speedment/runtime/field/trait/HasStringOperators.java