private static @NotNull Collection<String> denormalize(@NotNull String initial, @NotNull Collection<String> suggestions) {
    if (!StringUtil.isQuotedString(initial)) {
      return suggestions;
    }

    char quote = initial.charAt(0);
    StringBuilder tmp = new StringBuilder();
    ArrayList<String> result = new ArrayList<>(suggestions.size());

    for (String suggestion : suggestions) {
      tmp.append(suggestion);
      StringUtil.quote(tmp, quote);
      result.add(tmp.toString());
      tmp.setLength(0);
    }

    return result;
  }
private static @NotNull Collection<String> denormalize(@NotNull String initial, @NotNull Collection<String> suggestions)