#vulnerable code 
                                public AsteriskChannel originateToApplication(String channel, String application, String data, long timeout) throws ManagerCommunicationException
    {
        return originateToApplication(channel, application, data, timeout, null, null);
    } 
                            #location 3 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public AsteriskChannel originateToApplication(String channel, String application, String data, long timeout) throws ManagerCommunicationException, NoSuchChannelException
    {
        return originateToApplication(channel, application, data, timeout, null, null);
    }