ID of the first execution in the Workflow execution chain.
When getting a handle with no
runId, pass this option to ensure some
WorkflowHandle methods (e.g.
affect executions from another chain.
If set to true, instructs the client to follow the chain of execution before returning a Workflow's result.
Workflow execution is chained if the Workflow has a cron schedule or continues-as-new or configured to retry after failure or timeout.