private static String getMergeableStackTrace(String stackTrace, boolean skipFirstLine) {
      if (stackTrace == null) return null;
      StringBuilder builder = new StringBuilder();
      String[] lines = stackTrace.split("\n");
      for (int i = 0; i < lines.length; i++) {
        String line = lines[i];
        if (i == 0 && skipFirstLine) continue;//first line has unique details
        line = line.replaceAll("<0x.+>\\s", "<merged>");
        builder.append(line).append("\n");
      }
      return builder.toString();
    }
private static String getMergeableStackTrace(String stackTrace, boolean skipFirstLine)