def by_agreement_id(self,agreement_id: str) -> AgreementItemRequestBuilder:
        """
        Provides operations to manage the collection of agreement entities.
        param agreement_id: The unique identifier of agreement
        Returns: AgreementItemRequestBuilder
        """
        if agreement_id is None:
            raise TypeError("agreement_id cannot be null.")
        from .item.agreement_item_request_builder import AgreementItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["agreement%2Did"] = agreement_id
        return AgreementItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the collection of agreement entities.
        param agreement_id: The unique identifier of agreement
        Returns: AgreementItemRequestBuilder
        
msgraph/generated/agreements/agreements_request_builder.py