Nest IndicesStats() returns null types stats for each index

[Yifei891031]

NEST/Elasticsearch.Net version: Nest 2.4.6

Elasticsearch version:2.3.2

Description of the problem including expected versus actual behavior:

Steps to reproduce:
1.Create an index with two types and index some fake documents
2.Call IndicesStats(new IndicesStatsRequest())
3.debug into types in Indexing in each index, the total value in each type is different than the value we get from direct calling http://elasticsearch:9200/{indexname}/_stats?types={typename}

Provide ConnectionSettings (if relevant):

Provide DebugInformation (if relevant):

[Yifei891031]

This is not a bug