title: In the OpenRTB bid requests, is "bundle" unique to an app?
body: <p>I am looking at multple openRTB specs, for example from MoPub. They have a bundle field in their bid request. Bundle is a number 123456 for an iOS app, or package name for an android app like package.bundle.apname. 
  Is this "bundle" unique to an app? </p>
  
  <ol>
  <li><p>Can a single app have multiple "bundle"? </p></li>
  <li><p>Can a single "bundle" might mean multiple apps? </p></li>
  </ol>