title: Unity3D Assets Bundle Manifest
body: <p>Good Day!
  I'm new with assets bundle in unity, so I have a question:
  "Is it necessary to use <strong>AssetBundleManifest</strong> with <em>LoadFromCacheOrDownload</em> function"? And, is <strong>AssetBundleManifest</strong> file common for all bundles?</p>
  
  <p>In my project, I create a lot of new asset bundles every month. So should I rewrite AssetBundleManifest manually every time? </p>
  
  <p>P.S. I apologize if the wording of the question is incorrect. </p>