public JobStatusResponse(long?jobId, string jobReference, JobStatus status, JobReferences references, List <Signature> signatures, DateTime nextPermittedPollTime)
 {
     _jobId                = jobId;
     JobReference          = jobReference;
     Status                = status;
     References            = references;
     Signatures            = signatures;
     NextPermittedPollTime = nextPermittedPollTime;
 }
 public JobStatusResponse(long?jobId, string jobReference, JobStatus status, JobReferences references, List <Signature> signatures)
     : this(jobId, jobReference, status, references, signatures, DateTime.Now)
 {
 }