Probably not an issue, but just in case...

For some PropertyDescriptor d we have the following <d.setXXX()> <-> <@BeanProperty element> relations:

d.setBound(true) <-> @BeanProperty(bound = true)
d.setExpert(true) <-> @BeanProperty(expert = true)
d.setHidden(true) <-> @BeanProperty(hidden = true)
d.setPreferred(true) <-> @BeanProperty(preferred = true)
d.setValue("required", true) <-> @BeanProperty(required = true) - does not work! See JDK-8131939
d.setValue("visualUpdate", true) <-> @BeanProperty(visualUpdate = true)
d.setShortDescription("AAA") <-> @BeanProperty(description = "AAA")
d.setValue("enumerationValues", new Object[]{...}) <-> @BeanProperty(enumerationValues = {...})

but:

d.setConstrained(true) <-> ???

so, is that what expected? why "constrained" property is less important than (e.g.) "expert" or "bound"?