class StackTraceExpander {

  @VisibleForTesting
  static int getElidedFrameCount(@NotNull String line) {
    Matcher matcher = ELIDED_LINE_PATTERN.matcher(line);
    return matcher.matches() ? StringUtil.parseInt(matcher.group(1), -1) : -1;
  }

  public  StackTraceExpander(@NotNull String stackTraceLinePrefix, @NotNull String stackTraceCauseLinePrefix);

}