anchor.diff:  }
   
   
  -// convert the input to a date, or null if the input is not a date
  +/// convert the input to a date, or null if the input is not a date
   DateTime toDate(String str) {
     try {
       return DateTime.parse(str);
  
positive.code: Map _default_normalize_email_options = { 'lowercase': true };
  
  
  // convert the input to a string
  String toString(input) {
    if (input == null || (input is List && input.length == 0)) {
      input = '';
  
negative.code: }
  
  
  /// convert the input to a boolean Everything except for '0', 'false' and ''
  /// returns true. In [strict] mode only '1' and 'true' return true.
  bool toBoolean(String str, [bool strict]) {
    if (strict == true) {
      return str == '1' || str == 'true';
  