stringConvert method

Implementation

@override
String? stringConvert(dynamic x) {
  if (x is String) {
    return x;
  } else if (x is bool) {
    return x.toString();
  } else if (x is num) {
    formatter.maximumFractionDigits = 15;
    formatter.minimumFractionDigits = 0;
    formatter.minimumIntegerDigits = 1;
    formatter.turnOffGrouping();
    return formatter.format(x);
  }
  return null;
}