<!-- include start from interface/interface-description.xml.i -->
<leafNode name="description">
  <properties>
    <help>Interface specific description</help>
    <constraint>
      <regex>.{1,256}$</regex>
    </constraint>
    <constraintErrorMessage>Description too long (limit 256 characters)</constraintErrorMessage>
  </properties>
</leafNode>
<!-- include end -->