ToByteNullableImpl implements NullableExpression<T, ToByte<T>>, ToByteNullable<T> { @Override public Predicate<T> isNullPredicate() { return isNull; } ToByteNullableImpl(ToByte<T> original, Predicate<T> isNull); @Override ToByte<T> inner(); @Override Predicate<T> isNullPredicate(); @Override Byte apply(T t); @Override byte applyAsByte(T t); @Override ToByte<T> orThrow(); @Override ToByte<T> orElseGet(ToByte<T> getter); @Override ToByte<T> orElse(Byte value); @Override ToDoubleNullable<T> mapToDoubleIfPresent(ByteToDoubleFunction mapper); @Override ToByteNullable<T> mapIfPresent(ByteUnaryOperator mapper); @Override long hash(T object); @Override int compare(T first, T second); @Override boolean isNull(T object); @Override boolean isNotNull(T object); @Override boolean equals(Object o); @Override int hashCode();  }
@Test void isNullPredicate() { assertNotNull(instance.isNullPredicate()); }