If set, specifies the total duration for this workflow execution. This overrides the 
defaultExecutionStartToCloseTimeout specified
            when registering the workflow type. The valid values are integers greater than or equal to 
0. An integer value can be used to specify
            the duration in seconds while 
NONE can be used to specify unlimited duration. 
|  Note: | 
|---|
| An execution start-to-close timeout for this
            workflow execution must be specified either as a default for the workflow type or through this field. If neither this field is set nor a
            default execution start-to-close timeout was specified at registration time then a fault will be returned. | 
Constraints:
- Length
- 0 - 8

 Declaration Syntax
public string ExecutionStartToCloseTimeout { get; set; }Assembly: 
AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)