public Builder withSleepWhenRetry(int sleepWhenRetry) {
            this.sleepWhenRetry = sleepWhenRetry;
            return this;
        }
@param sleepWhenRetry time in milliseconds, for which the thread should sleep when task
    update call fails, before retrying the operation.
@return Returns the current instance.
client/src/main/java/com/netflix/conductor/client/automator/TaskRunnerConfigurer.java