anchor.diff:    /// [MethodElement]s are appended.
     List<MethodElement> get methods;
   
  +  /// Returns the unnamed constructor from [constructors].
  +  ConstructorElement? get unnamedConstructor;
  +
     /// Returns the field from [fields] that has the given [name].
     FieldElement? getField(String name);
   
  
positive.code: /// The result of applying augmentations to a [ClassElement].
  ///
  /// Clients may not extend, implement or mix-in this class.
  abstract class AugmentedClassElement implements AugmentedClassOrEnumElement {
    /// Returns mixins applied by this class or in its augmentations.
    ///
    /// This is a union of mixins applied by the class declaration and all its
  
negative.code: 
    /// Returns the method from [methods] that has the given [name].
    MethodElement? getMethod(String name);
  
    /// Returns the constructor from [constructors] that has the given [name].
    ConstructorElement? getNamedConstructor(String name);
  
    /// Returns the setter from [accessors] that has the given [name].
    PropertyAccessorElement? getSetter(String name);
  