def by_mobile_contained_app_id(self,mobile_contained_app_id: str) -> MobileContainedAppItemRequestBuilder:
        """
        Provides operations to manage the containedApps property of the microsoft.graph.mobileAppContent entity.
        param mobile_contained_app_id: The unique identifier of mobileContainedApp
        Returns: MobileContainedAppItemRequestBuilder
        """
        if mobile_contained_app_id is None:
            raise TypeError("mobile_contained_app_id cannot be null.")
        from .item.mobile_contained_app_item_request_builder import MobileContainedAppItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["mobileContainedApp%2Did"] = mobile_contained_app_id
        return MobileContainedAppItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the containedApps property of the microsoft.graph.mobileAppContent entity.
        param mobile_contained_app_id: The unique identifier of mobileContainedApp
        Returns: MobileContainedAppItemRequestBuilder
        
msgraph/generated/device_app_management/mobile_apps/item/graph_windows_app_x/content_versions/item/contained_apps/contained_apps_request_builder.py