Entity/Page.php
public function setForcedUrl($forcedUrl)
    {
        if (substr($forcedUrl, 0, 1) != '/' && $forcedUrl != null) {
            $forcedUrl = '/'.$forcedUrl;
        }
        $this->forcedUrl = $forcedUrl;
    }
public function setForcedUrl($forcedUrl)
    {
        if (substr($forcedUrl, 0, 1) != '/' && $forcedUrl != null) {
            $forcedUrl = '/'.$forcedUrl;
        }
        $this->forcedUrl = $forcedUrl;
    }
Set forcedUrl

@param string $forcedUrl