Latin1Data.unsafe constructor
      
      Latin1Data.unsafe(
    
- String from
Unsafely creates a Latin1Data instance from a String.
Throws an ArgumentError if the input is not a valid Latin-1 encoded string.
@param from the String to create the Latin1Data from
@return the Latin1Data
@throws ArgumentError when the input string is not a valid Latin-1 encoding.
Implementation
factory Latin1Data.unsafe(String from) {
  final result = Latin1Data.validated(from);
  if (result.value == null) {
    throw ArgumentError('Invalid Latin-1 string');
  } else {
    return result;
  }
}