private function insert(File $aFile)
    {
        $sql = 'INSERT INTO file (id, name, extension, mime_type, created_on, updated_on) VALUES (:id, :name, :extension, :mimeType, :createdOn, :updatedOn)';
        $this->execute($sql, [
            'id'        => $aFile->id()->id(),
            'name'      => $aFile->name()->name(),
            'extension' => $aFile->name()->extension(),
            'mimeType'  => $aFile->mimeType(),
            'createdOn' => $aFile->createdOn()->format(self::DATE_FORMAT),
            'updatedOn' => $aFile->updatedOn()->format(self::DATE_FORMAT),
        ]);
    }