Google search with Retrofit - json

Question

I am trying to learn Retrofit and want to use it for Google search. I have written following code:
public class RetrofitSample {
private static final String URL = "https://www.google.com";
interface Google {
#GET("/search?q=retrofit")
String search();
}
public static void main(String... args) {
RestAdapter restAdapter = new RestAdapter.Builder()
.setEndpoint(URL)
.build();
Google goog = restAdapter.create(Google.class);
String result = goog.search();
System.out.println(result);
}
}
When I run this code I am getting following error:
Exception in thread "main" retrofit.RetrofitError: com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 12 path $
at retrofit.RetrofitError.conversionError(RetrofitError.java:33)
at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:383)
at retrofit.RestAdapter$RestHandler.invoke(RestAdapter.java:240)
at $Proxy0.search(Unknown Source)
at RetrofitSample.main(RetrofitSample.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: retrofit.converter.ConversionException: com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 12 path $
at retrofit.converter.GsonConverter.fromBody(GsonConverter.java:67)
at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:367)
... 8 more
Caused by: com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 12 path $
at com.google.gson.Gson.assertFullConsumption(Gson.java:786)
at com.google.gson.Gson.fromJson(Gson.java:776)
at retrofit.converter.GsonConverter.fromBody(GsonConverter.java:63)
... 9 more
Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 12 path $
at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1573)
at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1423)
at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:546)
at com.google.gson.stream.JsonReader.peek(JsonReader.java:429)
at com.google.gson.Gson.assertFullConsumption(Gson.java:782)
... 11 more
Do I have to use Google search API (costum search) or is Google search returning som other type as result?
Thanks in advance.