How do I create an index using a json in ElasticSearch NEST, c#.net

Question

I used to create index from json using the following code,

var ESClient = new ElasticClient(setting);
ESClient.Raw.IndicesCreatePost("indexname", "strJson");

Now, that the nugetPackage of NEST elastic version has changed to 2.0.4, I am unable to work using the existing code. Could anyone please let me know what could be replacement for it.

Thanks