public CharSequence refFilter(String root, @NotNull CharSequence read) {
      StringBuilder ready = new StringBuilder();
      int prev = 0;
      Matcher matcher = mySelector.matcher(read);

      while (matcher.find()) {
        CharSequence before = read.subSequence(prev, matcher.start(1) - 1);     // Before reference
        CharSequence href = read.subSequence(matcher.start(1), matcher.end(1)); // The URL
        prev = matcher.end(1) + 1;
        ready.append(before);
        ready.append("\"");
        ready.append(ReadAction.compute(() -> convertReference(root, href.toString())));
        ready.append("\"");
      }

      ready.append(read, prev, read.length());

      return ready;
    }
public CharSequence refFilter(String root, @NotNull CharSequence read)