mvvmfx/src/main/java/de/saxsys/mvvmfx/utils/mapping/ModelWrapper.java
public LongProperty field(LongGetter<M> getter, LongSetter<M> setter) {
		return add(new BeanPropertyField<>(
				this::propertyWasChanged,
				getter::apply, (m, number) -> setter.accept(m, number.longValue()),
				SimpleLongProperty::new));
	}
public LongProperty field(LongGetter<M> getter, LongSetter<M> setter) {
		return add(new BeanPropertyField<>(
				this::propertyWasChanged,
				getter::apply, (m, number) -> setter.accept(m, number.longValue()),
				SimpleLongProperty::new));
	}
/* Field type Long