code: function getPlainTextUTF8() {
  		$txt = $this->toString(true, true, true);
  		$enc = $this->getEncoding();
  		if ($enc !== false) {
  			$txt = mb_convert_encoding($txt, 'UTF-8', $enc);
  		}
  		return preg_replace('`\s+`', ' ', html_entity_decode($txt, ENT_QUOTES, 'UTF-8'));
  	}
docs: Return plaintext taking document encoding into account
  @return string