/**
* Guard string method to be called with Crawler object
* @throws \InvalidArgumentException
*/
protected function guardText()
{
if (is_object($this->node)) {
$this->node = $this->node->text();
}
}
/**
* @param string $content
* @return $this
*/
public function setContent($content)
{
$this->content = $content;
$this->crawler->addContent($content);
return $this;
}