/** * Add preserve text element * * @param string $text * @param mixed $fontStyle * @param mixed $paragraphStyle * @return PreserveText */ public function addPreserveText($text, $fontStyle = null, $paragraphStyle = null) { $this->checkValidity('preservetext'); $preserveText = new PreserveText(String::toUTF8($text), $fontStyle, $paragraphStyle); $preserveText->setDocPart($this->getDocPart(), $this->getDocPartId()); $this->addElement($preserveText); return $preserveText; }