no invalid property available in nuxeo-input

In nuxeo-input element:
https://www.webcomponents.org/element/nuxeo/nuxeo-ui-elements/elements/nuxeo-input

there is no invalid property available like in paper-input:
https://www.webcomponents.org/element/PolymerElements/paper-input/elements/paper-input

After discussing with engineering, the invalid property is not bound to the paper-input's own invalid property.

A workaround is to use yourNuxeoInput.$.paperInput.invalid = true but ideally this should be available OOTB through a nuxeo-input property.