anchor.diff:    /// > This will be completely removed when the JS side of it is slated for removal (ReactJS 17 / react.dart 6.0.0)
     @mustCallSuper
     @Deprecated('6.0.0')
  -  void componentWillUpdate(Map nextProps, Map nextState) => _unsupportedLifecycleError('componentWillUpdate');
  +  void componentWillUpdate(Map nextProps, Map nextState) => throw _unsupportedLifecycleError('componentWillUpdate');
   
     /// Do not use; this is part of the legacy context API.
     ///
  
positive.code:   /// > This will be completely removed when the JS side of it is slated for removal (ReactJS 17 / react.dart 6.0.0)
    @mustCallSuper
    @Deprecated('6.0.0')
    void componentWillReceiveProps(Map newProps) => _unsupportedLifecycleError('componentWillReceiveProps');
  
    /// ReactJS lifecycle method that is invoked immediately before rendering when [nextProps] or [nextState] are being
    /// received.
  
negative.code:   /// > Use the [initialState] getter instead.
    @mustCallSuper
    @Deprecated('6.0.0')
    Map getInitialState() => throw _unsupportedLifecycleError('getInitialState');
  
    /// Invoked once and cached when [reactComponentClass] is called. Values in the mapping will be set on [props]
    /// if that prop is not specified by the parent component.
  