for (String iface : classDef.getInterfaces()) {
// XXX: php/0cn2, but this is wrong:
QuercusClass cl = Env.getInstance().findClass(iface, true, true);
if (cl == null)
throw new QuercusRuntimeException(L.l("cannot find interface {0}",
iface));
// _instanceofSet.addAll(cl.getInstanceofSet());
ClassDef ifaceDef = cl.getClassDef();