def by_data_policy_operation_id(self,data_policy_operation_id: str) -> DataPolicyOperationItemRequestBuilder:
        """
        Provides operations to manage the collection of dataPolicyOperation entities.
        param data_policy_operation_id: The unique identifier of dataPolicyOperation
        Returns: DataPolicyOperationItemRequestBuilder
        """
        if data_policy_operation_id is None:
            raise TypeError("data_policy_operation_id cannot be null.")
        from .item.data_policy_operation_item_request_builder import DataPolicyOperationItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["dataPolicyOperation%2Did"] = data_policy_operation_id
        return DataPolicyOperationItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the collection of dataPolicyOperation entities.
        param data_policy_operation_id: The unique identifier of dataPolicyOperation
        Returns: DataPolicyOperationItemRequestBuilder
        
msgraph/generated/data_policy_operations/data_policy_operations_request_builder.py