@jakarta.validation.constraints.NotNull
        @CronExpression
        private String requiredCron;

        public String getRequiredCron() {
            return requiredCron;
        }

        public void setRequiredCron(String requiredCron) {
            this.requiredCron = requiredCron;
        }
    }

    @CronExpression
    @jakarta.validation.constraints.NotBlank