anchor.diff:      );
     }
   
  -  /// The current query string shown in the [Appbar].
  +  /// The current query string shown in the [AppBar].
     ///
     /// The user manipulates this string via the keyboard.
     ///
  
positive.code:   /// the suggestions returned by [buildSuggestions].
    ///
    /// Calling this method will also put the input focus back into the search
    /// field of the ApBar.
    ///
    /// If the results are currently shown this method can be used to go back
    /// to showing the search suggestions.
  
negative.code:   /// See also:
    ///
    ///  * [AppBar.backgroundColor], which is set to [ThemeData.primaryColor].
    ///  * [AppBar.iconTheme], which is set to [ThemeData.primaryIconTheme].
    ///  * [AppBar.textTheme], which is set to [ThemeData.primaryTextTheme].
    ///  * [AppBar.brightness], which is set to [ThemeData.primaryColorBrightness].
    ThemeData appBarTheme(BuildContext context) {
  