@Override
    public Stream<Item> fieldsFor(T document) {
        return Stream.of(new NullableItem(
            document,
            document.nullableProperty(),
            document.nullableImplementationProperty()
        ));
    }
@author Simon Jonasson
@param <T>  the document type
@since 3.0.0
tool-parent/tool-propertyeditor/src/main/java/com/speedment/tool/propertyeditor/editor/NullablePropertyEditor.java