mvvmfx/src/main/java/de/saxsys/mvvmfx/utils/mapping/ModelWrapper.java
public IntegerProperty field(IntGetter<M> getter, IntSetter<M> setter) {
		return add(new BeanPropertyField<>(
				this::propertyWasChanged,
				getter::apply, (m, number) -> setter.accept(m, number.intValue()),
				SimpleIntegerProperty::new));
	}
public IntegerProperty field(IntGetter<M> getter, IntSetter<M> setter) {
		return add(new BeanPropertyField<>(
				this::propertyWasChanged,
				getter::apply, (m, number) -> setter.accept(m, number.intValue()),
				SimpleIntegerProperty::new));
	}
/* Field type Integer