RestClientBuilder.HttpClientConfigCallback (elasticsearch-extend 3.2 API)

Enclosing class:

RestClientBuilder
```
public static interface RestClientBuilder.HttpClientConfigCallback
```
Callback used to customize the CloseableHttpClient instance used by a RestClient instance. Allows to customize default RequestConfig being set to the client and any parameter that can be set through HttpClientBuilder

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`HttpAsyncClientBuilder`	`customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder)`	Allows to customize the `CloseableHttpAsyncClient` being created and used by the `RestClient`.

- Method Detail
  - customizeHttpClient
```
HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder)
```
    Allows to customize the CloseableHttpAsyncClient being created and used by the RestClient. Commonly used to customize the default CredentialsProvider for authentication or the SchemeIOSessionStrategy for communication through ssl without losing any other useful default value that the RestClientBuilder internally sets, like connection pooling.