Caption

17class Caption18{19    /**20     * Content type21     *22     * @var ?string23     * @see get_type()24     */25    public $type;26 27    /**28     * Language29     *30     * @var ?string31     * @see get_language()32     */33    public $lang;34 35    /**36     * Start time37     *38     * @var ?string39     * @see get_starttime()40     */41    public $startTime;42 43    /**44     * End time45     *46     * @var ?string47     * @see get_endtime()48     */49    public $endTime;50 51    /**52     * Caption text53     *54     * @var ?string55     * @see get_text()56     */57    public $text;58 59    /**60     * Constructor, used to input the data61     *62     * For documentation on all the parameters, see the corresponding63     * properties and their accessors64     */65    public function __construct(66        ?string $type = null,67        ?string $lang = null,68        ?string $startTime = null,69        ?string $endTime = null,70        ?string $text = null71    ) {72        $this->type = $type;73        $this->lang = $lang;74        $this->startTime = $startTime;75        $this->endTime = $endTime;76        $this->text = $text;77    }78 79    /**80     * String-ified version81     *82     * @return string83     */84    public function __toString()85    {86        // There is no $this->data here87        return md5(serialize($this));88    }89 90    /**91     * Get the end time92     *93     * @return string|null Time in the format 'hh:mm:ss.SSS'94     */95    public function get_endtime()96    {