class ExternalTaskUtils {

    public long calculateRetryDelay(int currentRetries) {
        int retrySequence = getRetrySequence().length - currentRetries;
        return Integer.parseInt(getRetrySequence()[retrySequence]) * getRetryMutiplier();
    }

    public  ExternalTaskUtils();
    public  ExternalTaskUtils(RetrySequenceLevel retrySequenceLevel);

}