anchor.diff:      yesNo.noText = _msgCancel;
     }
   
  -  static String get _msgSave => Intl.message('Save',
  -      name: '_msgSave',
  -      desc: 'Text on save button.',
  -      meaning: 'Text on save button.');
  -
  -  static String get _msgCancel => Intl.message('Cancel',
  -      name: '_msgCancel',
  -      desc: 'Text on cancel button.',
  -      meaning: 'Text on cancel button.');
  +  static final _msgSave = Intl.message('Save',
  +      desc: 'Text on save button.', meaning: 'Text on save button.');
  +
  +  static final _msgCancel = Intl.message('Cancel',
  +      desc: 'Text on cancel button.', meaning: 'Text on cancel button.');
   }
   
   @Directive(
  
positive.code:     yesNo.yesText = _msgSubmit;
    }
  
    static String get _msgSubmit => Intl.message('Submit',
        name: '_msgSubmit',
        desc: 'Text on submit button.',
        meaning: 'Text on submit button.');
  }
  
  /// Base implementation of directive to listen to keyup events.
  
negative.code:     _no.add(event);
    }
  
    static final _msgYes = Intl.message('Yes',
        name: '_msgYes',
        desc: 'Text on yes button.',
        meaning: 'Text on yes button.');
  
    static final _msgNo = Intl.message('No',
        name: '_msgNo',
        desc: 'Text on no button.',
        meaning: 'Text on no button.');
  