def by_subscription_id(self,subscription_id: str) -> SubscriptionItemRequestBuilder:
        """
        Provides operations to manage the subscriptions property of the microsoft.graph.driveItem entity.
        param subscription_id: The unique identifier of subscription
        Returns: SubscriptionItemRequestBuilder
        """
        if subscription_id is None:
            raise TypeError("subscription_id cannot be null.")
        from .item.subscription_item_request_builder import SubscriptionItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["subscription%2Did"] = subscription_id
        return SubscriptionItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the subscriptions property of the microsoft.graph.driveItem entity.
        param subscription_id: The unique identifier of subscription
        Returns: SubscriptionItemRequestBuilder
        
msgraph/generated/drives/item/items/item/subscriptions/subscriptions_request_builder.py