def by_run_id(self,run_id: str) -> RunItemRequestBuilder:
        """
        Provides operations to manage the runs property of the microsoft.graph.identityGovernance.workflow entity.
        param run_id: The unique identifier of run
        Returns: RunItemRequestBuilder
        """
        if run_id is None:
            raise TypeError("run_id cannot be null.")
        from .item.run_item_request_builder import RunItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["run%2Did"] = run_id
        return RunItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the runs property of the microsoft.graph.identityGovernance.workflow entity.
        param run_id: The unique identifier of run
        Returns: RunItemRequestBuilder
        
msgraph/generated/identity_governance/lifecycle_workflows/workflows/item/runs/runs_request_builder.py