@Override
  public Charset extractCharsetFromFileContent(final Project project, final @Nullable VirtualFile file, final @NotNull CharSequence content) {
    String name = XmlCharsetDetector.extractXmlEncodingFromProlog(content);
    Charset charset = CharsetToolkit.forName(name);
    return charset == null ? StandardCharsets.UTF_8 : charset;
  }
@Override
  public Charset extractCharsetFromFileContent(final Project project, final @Nullable VirtualFile file, final @NotNull CharSequence content)