title: Describe a multiple range parameter with Swagger
body: <p>I want to describe in Swagger 2.0 a parameter defined as follows :</p>
  
  <ul>
  <li><p>The parameter takes a valid value in the intervals : <strong>-20 &lt; parameter &lt; -10</strong> or <strong>0 &lt; parameter &lt; 30</strong></p></li>
  <li><p>The parameter is invalid if : <strong>-10 ≤ parameter ≤ 0</strong></p></li>
  </ul>
  
  <p>This means that it has two valid intervals and thus <strong>two max and mins values to define</strong>.
  Does Swagger specification support that kind of definitions?</p>