title: How can I define array of enums in API blueprint
body: <p>My supposed solution for parameters section is</p>
  
  <pre><code>+ fields: [firstField, secondField] (array[enum], optional)
    + Members
        + firstField
        + secondField
        + extraField
        + dummyField
  </code></pre>
  
  <p>But it failed on semantic error:</p>
  
  <blockquote>
    <p>The example value [firstField, secondField] of parameter fields is not in its list of expected values</p>
  </blockquote>