framework/RedKiteCms/Content/PageCollection/PageCollectionBase.php
public function contributor($username)
    {
        $this->username = $username;
        $this->pageFile = 'page.json';
        $this->seoFile = 'seo.json';
        if (null !== $this->username) {
            $this->pageFile = $this->seoFile = $this->username . '.json';
        }

        return $this;
    }
public function contributor($username)
    {
        $this->username = $username;
        $this->pageFile = 'page.json';
        $this->seoFile = 'seo.json';
        if (null !== $this->username) {
            $this->pageFile = $this->seoFile = $this->username . '.json';
        }

        return $this;
    }
Sets the page contributor
@param string $username

@return $this