// all operations on it to succeed. It is up to the broker to prevent illegal
// attempts at binding to this exchange, not the ACLs.
// Check access
if (!_virtualHost.getSecurityManager().authoriseUnbind(this, new AMQShortString(bindingKey), queue))
{
throw new AMQSecurityException("Permission denied: unbinding " + bindingKey);
}
BindingImpl b = _bindingsMap.remove(new BindingImpl(null, bindingKey,queue,arguments));
if (b != null)