public @Nullable List<QualifiedName> getNames(VirtualFile vFile) {
    if (vFile == null) {
      return null;
    }
    final List<QualifiedName> names = myQNameCache.get(vFile.getUrl());
    return names != null ? Collections.unmodifiableList(names) : null;
  }
public @Nullable List<QualifiedName> getNames(VirtualFile vFile)