public Object handleUnregisterFailoverListener(Invocation invocation) throws Throwable
{
ConnectionState state = getConnectionState(invocation);
MethodInvocation mi = (MethodInvocation)invocation;
FailoverListener listener = (FailoverListener)mi.getArguments()[0];
boolean result = state.getFailoverCommandCenter().unregisterFailoverListener(listener);
return new Boolean(result);
}