public function isCronConfigured()
    {
        $r1From = new \DateTime('-' . $this->checkingCronPeriod);
        $r1To = new \DateTime('+' . $this->checkingCronPeriod);

        $r2From = new \DateTime('- 1 hour');
        $r2To = new \DateTime();

        $format = \Espo\Core\Utils\DateTime::$systemDateTimeFormat;

        $selectParams = [
            'select' => ['id'],
            'leftJoins' => ['scheduledJob'],
            'whereClause' => [
                'OR' => [
                    [
                        ['executedAt>=' => $r2From->format($format)] ,
                        ['executedAt<=' => $r2To->format($format)],
                    ],
                    [
                        ['executeTime>=' => $r1From->format($format)],
                        ['executeTime<='=> $r1To->format($format)],
                        'scheduledJob.job' => 'Dummy'
                    ]
                ]
            ]
        ];


        return !!$this->getEntityManager()->getRepository('Job')->findOne($selectParams);
    }