Java: JUnit test Using Apache HTTPComponents

TestStoreForward.java

package us.greg;

import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import java.net.URLEncoder;

public class TestStoreForward {
	String xmlRequest = URLEncoder.encode(
			"http://localhost:8080/atm/prefs?customerID=123456789&atm=FG3781", "UTF-8");

	/*
	 * this is the test of the servlet and SP call
	 */
	@Test
	public void sqlErrorTest() {
		try {
			HttpGet httpget = new HttpGet(xmlRequest);
			HttpClient httpclient = new DefaultHttpClient();
			HttpResponse response = httpclient.execute(httpget);
			HttpEntity entity = response.getEntity();
			if (entity != null) {
				InputStream instream = entity.getContent();
				String data = StreamReaderHelper.readStream(instream);
				assertTrue(true);
			}
		} catch (Exception e) {
			fail();
		}
	}
}

Can you please tell me where I can find StreamReaderHelper?