KERML — OwnedExpression missing ConditionalBinaryOperatorExpression

ConditionalBinaryOperatorExpression appears to be unused and Simple Tests/Filtering.kerml fails to parse - it contains a ConditionalBinaryOperatorExpression

I think the problem is that ConditionalBinaryOperatorExpression is missing from the definition of OwnedExpression

   OwnedExpression
        = ConditionalExpression
        | BinaryOperatorExpression
        | UnaryOperatorExpression
        | ClassificationExpression
        | MetaclassificationExpression
        | ExtentExpression
        | PrimaryExpression
    ;