Box\Spout\Writer\Style\Style::getBorder PHP Method

    public function getBorder()
    {
        return $this->border;
    }

 /**
  * Returns the contents of the borders definition for the "<style:table-cell-properties>" section
  *
  * @param \Box\Spout\Writer\Style\Style $style
  * @return string
  */
 private function getBorderXMLContent($style)
 {
     $borderProperty = '<style:table-cell-properties %s />';
     $borders = array_map(function (BorderPart $borderPart) {
         return BorderHelper::serializeBorderPart($borderPart);
     }, $style->getBorder()->getParts());
     return sprintf($borderProperty, implode(' ', $borders));
 }