CosmosJsonDotNetSerializer modified to allow migration of old schema

CosmosJsonDotNetSerializer.cs

// Code removed for bravity
public sealed class CosmosJsonDotNetSerializer : CosmosSerializer
{
  // Code removed for bravity
  
  public override T FromStream<T>(Stream stream)
  {
      using (stream)
      {
          if (typeof(Stream).IsAssignableFrom(typeof(T)))
          {
              return (T)(object)stream;
          }

          using (var sr = new StreamReader(stream))
          {
              using (var jsonTextReader = new JsonTextReader(sr))
              {
                  var jsonSerializer = GetSerializer();
                  return UpdateSchemaVersionToCurrent<T>(jsonSerializer.Deserialize<JObject>(jsonTextReader));
              }
          }
       }
  }

  private T UpdateSchemaVersionToCurrent<T>(JObject jObject)
  {
      const int currentSchemaVersion = 3;
      var schemaVersion = jObject["SchemaVersion"].Value<int>();

      for (var i = schemaVersion; i < currentSchemaVersion; i++)
      {
          switch (i)
          {
            case 1:
              jObject["Name"] = jObject["OrderName"];
              jObject["OrderName"] = null;
              break;
    
            case 2:
                var hasShipped = jObject["HasShipped"].Value<bool>();
                if (hasShipped)
                {
                    jObject["OrderStatus"] = (int)OrderStatus.Shipped;
                }
                else
                {
                    jObject["OrderStatus"] = (int)OrderStatus.Processed;
                }
                break;
          }         
        }
        
        jObject["SchemaVersion"] = currentSchemaVersion;        
        return jObject.ToObject<T>();
    }
  
  // Code removed for bravity
}