I'm testing Volley's HurlStack in Android M Developer Preview. 

After I change `compileSdkVersion` from `22` to `'android-MNC'`, all classes from org.apache.http are not compiled:

```
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.ProtocolVersion;
import org.apache.http.StatusLine;
import org.apache.http.entity.BasicHttpEntity;
import org.apache.http.message.BasicHeader;
import org.apache.http.message.BasicHttpResponse;
import org.apache.http.message.BasicStatusLine;

```

How can I modify my code to solve this problem? 

I know there're some changes related to Apache HTTP client, but it still doesn't work when I follow the steps to add `useLibrary 'org.apache.http.legacy'` in gradle.

Reference: [HurlStack.java AOSP](https://android.googlesource.com/platform/frameworks/volley/+/c3dea925af9b3523e2e01e8b7799e71ef558c1c5/src/com/android/volley/toolbox/HurlStack.java)

[Behavior Changes: Apache HTTP Client Removal](https://developer.android.com/preview/behavior-changes.html#behavior-apache-http-client)