def by_telecom_expense_management_partner_id(self,telecom_expense_management_partner_id: str) -> TelecomExpenseManagementPartnerItemRequestBuilder:
        """
        Provides operations to manage the telecomExpenseManagementPartners property of the microsoft.graph.deviceManagement entity.
        param telecom_expense_management_partner_id: The unique identifier of telecomExpenseManagementPartner
        Returns: TelecomExpenseManagementPartnerItemRequestBuilder
        """
        if telecom_expense_management_partner_id is None:
            raise TypeError("telecom_expense_management_partner_id cannot be null.")
        from .item.telecom_expense_management_partner_item_request_builder import TelecomExpenseManagementPartnerItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["telecomExpenseManagementPartner%2Did"] = telecom_expense_management_partner_id
        return TelecomExpenseManagementPartnerItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the telecomExpenseManagementPartners property of the microsoft.graph.deviceManagement entity.
        param telecom_expense_management_partner_id: The unique identifier of telecomExpenseManagementPartner
        Returns: TelecomExpenseManagementPartnerItemRequestBuilder
        
msgraph/generated/device_management/telecom_expense_management_partners/telecom_expense_management_partners_request_builder.py