public async Task <DocumentIndexResult> MergeOrUploadDocumentsAsync <T>(string indexName, T[] documents)
{
var indexClient = GetClient(indexName);
var actions = new IndexAction <T>[] { };
foreach (var d in documents)
{
actions.Append(IndexAction.MergeOrUpload(d));
}
var batch = IndexBatch.New(actions);
return(await indexClient.Documents.IndexAsync(batch));
}