
 the form in which the HTTP call should be made.
 <p>
 The relative path for a given method is obtained from an annotation on the method describing
 the request type. The built-in methods are <a href="../retrofit/http/GET.html" title="annotation in retrofit.http"><code>GET</code></a>,
 <a href="../retrofit/http/PUT.html" title="annotation in retrofit.http"><code>PUT</code></a>, <a href="../retrofit/http/POST.html" title="annotation in retrofit.http"><code>POST</code></a>, <a href="../retrofit/http/HEAD.htm