anchor.diff:    /// fields.
     static const TextInputType multiline = const TextInputType._(1);
   
  -  /// Optimize for numerical information.
  +  /// Optimize for unsigned numerical information without a decimal point.
     ///
     /// Requests a default keyboard with ready access to the number keys.
     /// Additional options, such as decimal point and/or positive/negative
  
positive.code:     text, multiline, number, phone, datetime, emailAddress, url,
    ];
  
    // Corresponding string name for each the [values].
    static const List<String> _names = const <String>[
      'text', 'multiline', 'number', 'phone', 'datetime', 'emailAddress', 'url',
    ];
  
negative.code: class TextInputType {
    const TextInputType._(this.index) : signed = null, decimal = null;
  
    /// Optimize for numerical information.
    ///
    /// Requests a numeric keyboard with additional settings.
    /// The [signed] and [decimal] parameters are optional.
  