schema.xml and Xinclude

[Patrick Sauts]

As <types/> in schema.xml are the same between all our indexes, I'd like 
to make them an XInclude so I tried :

<?xml version="1.0" encoding="UTF-8"?>
<schema name="example" version="1.2" 
xmlns:xi="http://www.w3.org/2001/XInclude";>

 <xi:include href="solr-types.xml"/>
<fields>
-
-
-
</schema>

My Syntax might not be correct ?
Or it is not possible ? yet ?

Thank you again for your time.

Patrick.