title: macOS, iOS & tvOS documentation missing imports?
body: <p>I'm looking into iOS/tvOS docs for GCKeyboard &amp; GCMouse types.</p>
  <p>However Apple docs seem to be missing basic info such as what I import to use a type. For example C# docs always show what libraries are needed on MS websites for types. So do Googles Android docs. I'm not seeing this on Apples docs here: <a href="https://developer.apple.com/documentation/gamecontroller/gckeyboard" rel="nofollow noreferrer">https://developer.apple.com/documentation/gamecontroller/gckeyboard</a></p>
  <ul>
  <li>Is there an easy way in ObjC or Swift to check where a type is from?</li>
  <li>Does Apple provide any way to lookup what source file I should import for a type? How do people normally go about these lacking docs with xCode dev work?</li>
  </ul>