code: public static Set<Asset> resolveAssets(MinecraftDirectory minecraftDir, Version version) throws IOException {
  		return resolveAssets(minecraftDir, version.getAssets());
  	}
docs: Resolves the asset index.
  
  @param minecraftDir the minecraft directory
  @param version the owner version of the asset index
  @return the asset index, or null if the asset index does not exist
  @throws IOException if an I/O error occurs during resolving asset index
  @throws NullPointerException if
  <code>minecraftDir==null || version==null</code>