protected String constructOutputString() {
StringWriter body = new StringWriter();
Iterator iter = _parameters.iterator();
while (iter.hasNext()) {
Pair element = (Pair) iter.next();
if( !body.toString().equals("") ) // It's not the first parameter, set the &
{
body.write("&");
}
body.write(element.getFirst() + "=" + element.getSecond());
}
return body.toString();
}