/**
  * Write paragraph style.
  *
  * @param \PhpOffice\Common\XMLWriter $xmlWriter
  * @param string $styleName
  * @param \PhpOffice\PhpWord\Style\Paragraph $style
  * @return void
  */
 private function writeParagraphStyle(XMLWriter $xmlWriter, $styleName, ParagraphStyle $style)
 {
     $xmlWriter->startElement('w:style');
     $xmlWriter->writeAttribute('w:type', 'paragraph');
     $xmlWriter->writeAttribute('w:customStyle', '1');
     $xmlWriter->writeAttribute('w:styleId', $styleName);
     $xmlWriter->startElement('w:name');
     $xmlWriter->writeAttribute('w:val', $styleName);
     $xmlWriter->endElement();
     // Parent style
     $basedOn = $style->getBasedOn();
     $xmlWriter->writeElementIf(!is_null($basedOn), 'w:basedOn', 'w:val', $basedOn);
     // Next paragraph style
     $next = $style->getNext();
     $xmlWriter->writeElementIf(!is_null($next), 'w:next', 'w:val', $next);
     // w:pPr
     $styleWriter = new ParagraphStyleWriter($xmlWriter, $style);
     $styleWriter->write();
     $xmlWriter->endElement();
 }