Cannot Unset Value

[dahlbyk]

I have a Customer that incorrectly set a DoingBusinessAs value. In trying to clear the value, the API doesn't seem to receive the null.

Guessing it's due to:

dwolla-v2-csharp/Dwolla.Client/DwollaClient.cs

Line 41 in e4d781b

NullValueHandling = NullValueHandling.Ignore

That was added in 0d02518, but doesn't seem linked to any particular public issue. Unclear if it's actually necessary for proper functioning of the SDK.

Three suggestions:

1. Remove that and see what breaks.
2. Allow overriding JsonSettings either globally or per client/request.
3. Annotate optional properties like DoingBusinessAs with [JsonProperty(NullValueHandling = NullValueHandling.Include)]