/**
  * Transition for when the user decides to change the FB App.
  */
 private static function transition_edit_app()
 {
     Instant_Articles_Option_FB_App::delete_option();
     Instant_Articles_Option_FB_Page::delete_option();
     return update_option('instant-articles-current-state', self::STATE_APP_SETUP);
 }
 /**
  * Edits the App ID and App Secret within the APP_SETUP state.
  */
 public static function edit_app()
 {
     if (!current_user_can('manage_options')) {
         wp_die(esc_html('You do not have sufficient permissions to access this page.'));
     }
     $current_state = Instant_Articles_Wizard_State::get_current_state();
     if ($current_state !== Instant_Articles_Wizard_State::STATE_APP_SETUP) {
         die;
     }
     Instant_Articles_Option_FB_App::delete_option();
     self::render(true);
     die;
 }