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package XSConf;

...
    return $package;
}
1;

<config>
    <database>
...
        </hostservices>
    </app>
</config>

#!/usr/bin/perl 
use XSConf qw(foo.xml);
...
database: port = DBPORT
database: host = DBHOST
service telnet:23

use XSConf qw(foo.xml);
XSConf->config->database->codeset->foo;
__END__
Can't locate object method "foo" via package "iso-8859-1" (perhaps you
+ forgot to load "iso-8859-1"?) at...

package XSConf;

...
    $_[0];
}
1;