Djangoのadminサイトに追加ページを追加したい

def get_urls(self):
        # Since this module gets imported in the application's root package,
        # it cannot import models from other applications at the module level,
        # and django.contrib.contenttypes.views imports ContentType.
        from django.contrib.contenttypes import views as contenttype_views
        from django.urls import include, path, re_path

        def wrap(view, cacheable=False):
            def wrapper(*args, **kwargs):
                return self.admin_view(view, cacheable)(*args, **kwargs)

            wrapper.admin_site = self
            return update_wrapper(wrapper, view)

        # Admin-site-wide views.
        urlpatterns = [
            path("", wrap(self.index), name="index"),
            path("login/", self.login, name="login"),
            path("logout/", wrap(self.logout), name="logout"),
            path(
                "password_change/",
                wrap(self.password_change, cacheable=True),
                name="password_change",
            ),
            path(
                "password_change/done/",
                wrap(self.password_change_done, cacheable=True),
                name="password_change_done",
            ),
            path("autocomplete/", wrap(self.autocomplete_view), name="autocomplete"),
            path("jsi18n/", wrap(self.i18n_javascript, cacheable=True), name="jsi18n"),
            path(
                "r/<int:content_type_id>/<path:object_id>/",
                wrap(contenttype_views.shortcut),
                name="view_on_site",
            ),
            path("new_page", wrap(self.new_page), name="new_page"),
        ]

        # Add in each model's views, and create a list of valid URLS for the
        # app_index
        valid_app_labels = []
        for model, model_admin in self._registry.items():
            urlpatterns += [
                path(
                    "%s/%s/" % (model._meta.app_label, model._meta.model_name),
                    include(model_admin.urls),
                ),
            ]
            if model._meta.app_label not in valid_app_labels:
                valid_app_labels.append(model._meta.app_label)

        # If there were ModelAdmins registered, we should have a list of app
        # labels for which we need to allow access to the app_index view,
        if valid_app_labels:
            regex = r"^(?P<app_label>" + "|".join(valid_app_labels) + ")/$"
            urlpatterns += [
                re_path(regex, wrap(self.app_index), name="app_list"),
            ]

        if self.final_catch_all_view:
            urlpatterns.append(re_path(r"(?P<url>.*)$", wrap(self.catch_all_view)))

        return urlpatterns