NewClient creates an instance of a workflow client.

NewDomainClient creates an instance of a domain client, to manage lifecycle of domains.

QueryTypeStackTrace is the build in query type for Client.QueryWorkflow() call.

WorkflowIDReusePolicyAllowDuplicate allow start a workflow execution using the same workflow ID,when workflow not running.

WorkflowIDReusePolicyAllowDuplicateFailedOnly allow start a workflow execution when workflow not running, and the last execution close state is in [terminated, cancelled, timeouted, failed].

WorkflowIDReusePolicyRejectDuplicate do not allow start a workflow execution using the same workflow ID at all.