how to add the second Preprocessing instruction usingXMLport

Hi, ALL!
I have a problem.

I use XML port and one codeunit

When I get xml file the first Preprocessing instructions is

<?xml version="1.0" encoding="UTF-16" standalone="no" ?>

And then posted xml-structure(or xml-body).

Ex.:
<?xml version="1.0" encoding="UTF-16" standalone="no" ?>
<Example></Example>
...

The question is - is it possible add the second line of Preprocessing instuctions

<?xml-stylesheet type="text/xsl" href="example.xslt?>

between

<?xml version="1.0" encoding="UTF-16" standalone="no" ?>
and xml-body to get (see below):

<?xml version="1.0" encoding="UTF-16" standalone="no" ?>
<?xml-stylesheet type="text/xsl" href="example.xslt?>
<Example></Example>
...

or it is impossible using xml-port and its triggers? ](*,) maybe somebody explains?