OEModule\PASAPI\resources\Appointment::getWhen PHP Method

    public function getWhen()
    {
        if (!property_exists($this, 'AppointmentDate')) {
            $this->AppointmentDate = $this->default_date;
        }
        if (!property_exists($this, 'AppointmentTime')) {
            $this->AppointmentTime = $this->default_time;
        }
        $concatenated = substr($this->AppointmentDate, 0, 10) . ' ' . $this->AppointmentTime;
        $result = \DateTime::createFromFormat('Y-m-d H:i', $concatenated);
        if (!$result) {
            throw new \Exception("Could not parse date and time values ({$concatenated}):" . print_r(\DateTime::getLastErrors(), true));
        }
        return $result;
    }