title: How can I call multiple requests at the same time in Retrofit 2
body: <p>I have two different REST method, and I want to call them at the same time. How can I do this in Retrofit 2 ?</p>
  
  <p>I can call them one by one of course, but is there any suggested method in retrofit ? </p>
  
  <p>I expect something like:</p>
  
  <pre><code>Call&lt;...&gt; call1 = myService.getCall1();
  Call&lt;...&gt; call2 = myService.getCall2();
  
  MagicRetrofit.call (call1,call2,new Callback(...) {...} );  // and this calls them at the same time, but give me result with one method
  </code></pre>