generated interface from "container" in "case" does not extend ChildOf interface

It is not possible to use "container" which is located underneath "case" in InstanceIdentifierBuilder.child(<N extends ChildOf<? super T>> container) because generated interface from "container" does not extend ChildOf interface.

Example:
opendaylight-action-types.yang

grouping action {
choice action {
case output-action-case {
container output-action

}
}
}

generated interface from output-action-case is
public interface OutputAction
extends
DataObject,
Augmentable<org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.output.action._case.OutputAction>