src/Mvc/Util/Session.php
private function update()
    {
        if (null !== $this->namespace) {
            $_SESSION[$this->namespace] = $this->sessionData;
        } else {
            $_SESSION = $this->sessionData;
        }
    }
private function update()
    {
        if (null !== $this->namespace) {
            $_SESSION[$this->namespace] = $this->sessionData;
        } else {
            $_SESSION = $this->sessionData;
        }
    }
Update internal session data