title: Retrofit POST URL with parameters
body: <p>I have a particular web service that has the following POST URL:</p>
  
  <pre><code>(host)/pois/category?lat=...&amp;long=...
  </code></pre>
  
  <p>Where category can be three things (let's say "cat1", "cat2" or "cat3"), and lat and long are doubles with the user geolocation.</p>
  
  <p>Since the URL is defined as an Annotation like </p>
  
  <pre><code>@POST("/pois/")
  </code></pre>
  
  <p>How can I add or set these parameters to my URL?</p>