function execute()
 {
     $context = $this->getContext();
     $controller = $context->getController();
     $request = $context->getRequest();
     $user = $context->getUser();
     // 対象となるユーザコミュニティIDを取得
     $user_community_id = $request->ACSgetParameter('id');
     // 対象となるマイフレンズグループコミュニティIDを取得
     $friends_group_community_id = $request->ACSgetParameter('community_id');
     // 更新
     ACSUser::delete_friends_group($friends_group_community_id);
     $friends_group_list_top_page_url = $this->getControllerPath('User', 'FriendsGroupList') . '&id=' . $user_community_id;
     header("Location: {$friends_group_list_top_page_url}");
 }