The workflowId of the workflow execution. This field is required. The specified string must not start or end with whitespace. It must
            not contain a : (colon), / (slash), | (vertical bar), or any control characters (\u0000-\u001f | \u007f - \u009f).
            Also, it must not contain the literal string "arn".
             
            
Constraints:
 Declaration Syntax
 Declaration Syntax| C# | 
public string WorkflowId { get; set; }