Is it possible to return an XML document (for example from FastCGI) which contains a processing instruction, and have the XSLT module locate and apply the XSL file?

For example; if the FastCGI app returns:

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="/xsl/basic.xsl"?>
<root />

...then would/could the XSLT module load the file based on the current "root" set in the server section of the config file?