Retrofit 2 void return : <p>In Retrofit 2, service methods representing http methods must return <code>Call</code>. </p>

<p><code>Call</code> is a generic which must take the type representing the return object of the http method. </p>

<p>For example, </p>

<pre><code>@GET("/members/{id}")
Call&lt;Member&gt; getMember(@Path("id") Long id);
</code></pre>

<p>For http methods such as delete, no content is returned. In cases like this, what parameter should be provided to <code>Call</code>?</p>
