docs: private SpannableString getDistanceString(String distance, String unit) {
      SpannableString spannableString = new SpannableString(String.format("%s %s", distance, unitStrings.get(unit)));
  
      spannableString.setSpan(new StyleSpan(Typeface.BOLD), 0, distance.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      spannableString.setSpan(new RelativeSizeSpan(0.65f), distance.length() + 1,
        spannableString.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
  
      return spannableString;
    }