public Object setLanguage(Object handle, String language) {
if (handle instanceof Expression) {
((Expression) handle).setLanguage(language);
return handle;
}
throw new IllegalArgumentException("handle: " + handle + " language: " + language);
}
public Object setBody(Object handle, String body) {
if (handle instanceof Expression) {
((Expression) handle).setBody(body);
return handle;
}
throw new IllegalArgumentException("handle: " + handle + " body:" + body);
}