@Nullable
  private static TextRange findCustomRange(String text, int start, int end, char startChar, char endChar) {
    int prev = text.lastIndexOf(startChar, start);
    int next = text.indexOf(endChar, end);
    if (prev < 0 || next < 0) {
      return null;
    }
    if (StringUtil.contains(text, prev + 1, start, endChar) || StringUtil.contains(text, end, next, startChar)) return null;
    if (prev + 1 < start || next > end) {
      return new TextRange(prev + 1, next);
    }

    return new TextRange(prev, next + 1);
  }
@Nullable
  private static TextRange findCustomRange(String text, int start, int end, char startChar, char endChar)