public function submitLoginForm()
    {

        // Get the session.
        $session = $this->verifySession();

        // Verify we are on the login page.
        $this->verifyLoginPage();

        // Get the page.
        $page = $session->getPage();

        // Find the submit button.
        $submit_button = $page->find('css', '#wp-submit');

        // Try to focus the submit button.
        try {
            $submit_button->focus();
        } catch (UnsupportedDriverActionException $e) {
            // This will fail for GoutteDriver but neither is it necessary.
        }

        // Click the submit button.
        $submit_button->click();
    }