Within your interface, define an active Listings method with a void return type. activeListings should take two paramet

thanks James for the help...

package com.etsy.android.samples.sharesy.api;

import com.etsy.android.samples.sharesy.model.ActiveListings;

import retrofit.Callback; import retrofit.http.GET; import retrofit.http.Query;

// YOUR CODE HERE public interface Api{ void activeListings(@Query("includes") String include, Callback<ActiveListings> callback);

Hello,

When defining an interface, you will mostly just be writing the return type, method name, and parameters for each of the methods that you will want implemented when someone implements your interface in their class. For example:

public interface SomeInterface {
    public String someMethod();
    public Object someMethod2(int number);
    public int someThirdMethod(Object someObject);
}

Please let us know if you have more trouble with this. If so, please provide your current code so that we can help you from where you are currently at.