public function setCsvOptions ($charSet = 'utf-8', $delimField = ",", $delimNewLine = "\n", array $columnHeaderNames = [])
    {
        $this->csv['charSet'] = $charSet;
        $this->csv['delimField'] = $delimField;
        $this->csv['delimNewLine'] = $delimNewLine;

        $this->csv['columnHeaderNames'] = $columnHeaderNames;

        return $this;
    }