public static void WriteSingle(TaskDocumentWriter taskWriter, Prescription prescription)
 {
     if (prescription == null)
         return;
     var rasterPrescription = prescription as RasterGridPrescription;
     if (rasterPrescription != null)
     {
         var writer = new PrescriptionWriter(taskWriter);
         writer.WritePrescription(rasterPrescription);
     }
 }
 private List<TZN> Map(Prescription prescription)
 {
     throw new NotImplementedException();
 }