title: Scala Play Swagger: Nested @ApiImplicitParam definition
body: <p>I use <code>play-swagger</code> + <code>swagger-ui</code> in my project, however I have request with <code>json</code> body like this:</p>
  
  <p><code>{"country":{"title": "Germany"}}'</code></p>
  
  <p>When I annotate my method with:</p>
  
  <p><code>ApiImplicitParam(name = "country[title]", value = "Country's title", required = true, dataType = "String", paramType = "body")</code></p>
  
  <p>it doesn't work in swagger UI, how can I tell that my <code>title</code> name in <code>country</code> namespace ?</p>