code: public void executeJob(String jobName) throws MangooSchedulerException {
          Objects.requireNonNull(this.quartzScheduler, Required.SCHEDULER.toString());
          Objects.requireNonNull(jobName, Required.JOB_NAME.toString());
          
          try {
              for (JobKey jobKey : getAllJobKeys()) {
                  if (jobKey.getName().equalsIgnoreCase(jobName)) {
                      this.quartzScheduler.triggerJob(jobKey);  
                  }
              }
          } catch (SchedulerException | MangooSchedulerException e) {
              throw new MangooSchedulerException(e);
          }
      }
docs: Executes a single Quartz Scheduler job right away only once
  
  @param jobName The name of the job to execute
  @throws MangooSchedulerException if an error occurs during execution of the job