exchange-2.0/app/Classes/Modules/Documents/DataTransferObjects/FileObject.php

<?php

namespace App\Classes\Modules\Documents\DataTransferObjects;

use App\Classes\Interfaces\DataTransferObject;

class FileObject implements DataTransferObject
{
    /** @var int|null */
    private $document_id;

    /** @var text|null */
    private $file;

    /** @var string|null */
    private $file_type;

    /**
     * CompanyObject constructor.
     * @param int|null $document_id
     * @param null|string $file
     * @param string|null $file_type
     */
    public function __construct(
        ?int $document_id, 
        ?string $file, 
        ?string $file_type 
    )
    {
        $this->document_id = $document_id;
        $this->file = $file;
        $this->file_type = $file_type;
    }

    /**
     * @return int|null
     */
    public function getDocumentId(): ?int
    {
        return $this->document_id;
    }

    /**
     * @return string|null
     */
    public function getFile(): ?string
    {
        return $this->file;
    }

    /**
     * @return string|null
     */
    public function getFileType(): ?string
    {
        return $this->file_type;
    }

}