// Do nothing. We did everything necessary while compiling the XSLFunction element.
return null;
} else {
int slot = getSlotNumber();
if (requiredType != null) {
SuppliedParameterReference pref = new SuppliedParameterReference(slot);
pref.setSourceLocator(this);
RoleLocator role = new RoleLocator(RoleLocator.PARAM, getVariableDisplayName(), 0);
//role.setSourceLocator(new ExpressionLocation(this));
role.setErrorCode("XTTE0590");
conversion = TypeChecker.staticTypeCheck(
pref,