shouldQuoteName method

Implementation

bool shouldQuoteName() {
  if (getKey() == "") {
    return false;
  } else {
    String letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    for (int i = 0; i < getKey().length; i++) {
      String digit = getKey().substring(i, i + 1);
      if (letters.indexOf(digit) == -1) {
        return true;
      }
    }
    return false;
  }
}