xsi:type attribute ignored during validation

[Markos Zaharioudakis]

I think that the following query should return xs:integer, but it returns xs:untypedAtomic.

import module namespace schema = "http://www.zorba-xquery.com/modules/schema";

declare variable $doc :=
<numbers xmlns:xs="http://www.w3.org/2001/XMLSchema"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<xs_long xsi:type="xs:long">1</xs_long>
<xs_long xsi:type="xs:integer">2</xs_long>
<xs_long>3</xs_long>
</numbers>
;

declare variable $vdoc := validate lax { $doc };

schema:schema-type(data(($vdoc//xs_long)[2]))