Bucket aggregation fails on elasticsearch 1.4.0

[lukapor]

private IAggregation GetBucketAggregation(JsonReader reader, JsonSerializer serializer)
fails,

Elasticsearch 1.4.0 introduced sum_other_doc_count property so serializer fails.

I did quick hack, so I did not pull request.

[lukapor]

sorry its already open

elastic/elasticsearch#8213

[niemyjski]

We are also seeing this issue! Do you know if a fix will be out today for this?