def service_announcement(self) -> ServiceAnnouncementRequestBuilder:
        """
        Provides operations to manage the serviceAnnouncement property of the microsoft.graph.admin entity.
        """
        from .service_announcement.service_announcement_request_builder import ServiceAnnouncementRequestBuilder

        return ServiceAnnouncementRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to manage the serviceAnnouncement property of the microsoft.graph.admin entity.
        
msgraph/generated/admin/admin_request_builder.py