anchor.diff:    datetime,
   }
   
  -/// A action the user has requested the text input control to perform.
  +/// An action the user has requested the text input control to perform.
   enum TextInputAction {
     /// Complete the text input operation.
     done,
  
positive.code:     this.actionLabel,
    });
  
    /// For which type of information to optimize the text input control.
    final TextInputType inputType;
  
    /// What text to display in the text input control's action button.
  
negative.code: 
  export 'dart:ui' show TextAffinity;
  
  /// The type of information for which to optimize the text input control.
  enum TextInputType {
    /// Optimize for textual information.
    text,
  