public VignetteTableEntity(LicencePlate licencePlate,DateTime startDate, LicenceDuration licenceDuration)
 {
     var licenceKey = licencePlate.ToKey();
     this.PartitionKey = ToPartitionKey(licenceKey);
     this.RowKey = licenceKey;
     StartDate = startDate;
     LicenceDuration = (int)licenceDuration;
 }
        public Task SaveVignette(LicencePlate licencePlate, DateTime dateTime, LicenceDuration licenceDuration)
        {
            var t = GetTable();

            throw new NotImplementedException();
        }