The optional default maximum duration, specified when registering the workflow type, that a decision task for executions of this workflow
            type might take before returning completion or failure. If the task does not close in the specified time then the task is automatically
            timed out and rescheduled. If the decider eventually reports a completion or failure, it is ignored. This default can be overridden when
            starting a workflow execution using the StartWorkflowExecution action or the StartChildWorkflowExecutionDecision. 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.
             
            
Constraints:
 Declaration Syntax
 Declaration Syntax| C# | 
public string DefaultTaskStartToCloseTimeout { get; set; }