RevisionContentResourceLoader(HostBundleRevision hostRev, RevisionContent revContent) {
   assert hostRev != null : "Null hostRev";
   assert revContent != null : "Null revContent";
   this.delegate = new VirtualFileResourceLoader(revContent.getVirtualFile());
   this.revContent = revContent;
   this.hostRev = hostRev;
 }
 @Override
 public Resource getResource(String path) {
   URL url = revContent.getEntry(path);
   return url != null ? new URLResource(url) : null;
 }
 @Override
 public String toString() {
   return revContent.toString();
 }