anchor.diff:  
     /// Disable the default implicit display filtering for a field.
     static const FilterFinderOption DISABLE_IMPLICIT_DISPLAY_FILTERING =
  -  const FilterFinderOption._('DISABLE_IMPLICIT_DISPLAY_FILTERING');
  +      const FilterFinderOption._('DISABLE_IMPLICIT_DISPLAY_FILTERING');
   }
   
   abstract class HasFilterFinderOptions {
  
positive.code: 
      for (DeclarationMirror constructor in _class.declarations.values) {
        if (constructor is MethodMirror &&
        constructor.isConstructor &&
        constructor.parameters.isEmpty) {
          page = _class.newInstance(constructor.constructorName, []);
          break;
        }
  
negative.code: 
    _FinderListFieldInfo(
        Symbol fieldName, this._finder, this._filters, this._instanceType)
        : super(fieldName);
  
    @override
    calculateFieldValue(SearchContext context, PageLoader loader) {
      List elements = _getElements(context, _finder, _filters);
      if (_instanceType.simpleName != const Symbol('WebElement')) {
        elements = elements
            .map((element) => loader._getInstance(_instanceType, element))
            .toList();
      }
      return elements;
    }
  