overrides its own @views. -->
<rng:optional><rng:attribute name="view_mode"/></rng:optional>
<!-- Add a 'Create' button in order to create a new resource of the action's model
- values : [true|false|<ID of specific form view>]. -->
+ values : [true|false|<ID of specific action view>]. -->
<rng:optional><rng:attribute name="creatable"/></rng:optional>
</rng:element>
</rng:zeroOrMore>