anchor.diff:    ///
     /// The trailing edge of the icon is padded by 16dps.
     ///
  -  /// The decoration's container is the area which is filled if [isFilled] is
  +  /// The decoration's container is the area which is filled if [filled] is
     /// true and bordered per the [border]. It's the area adjacent to
     /// [decoration.icon] and above the widgets that contain [helperText],
     /// [errorText], and [counterText].
  
positive.code:   /// is not specified. This border's [InputBorder.borderSide] property is
    /// configured by the InputDecorator, depending on the values of
    /// [InputDecoration.errorText], [InputDecoration.enabled],
    /// [InputDecorator.isFocused and the current [Theme].
    ///
    /// Typically one of [UnderlineInputBorder] or [OutlineInputBorder].
    /// If null, InputDecorator's default is `const UnderlineInputBorder()`.
  
negative.code:   ///
    /// By default the fillColor is based on the current [Theme].
    ///
    /// The decoration's container is the area which is filled if [filled] is
    /// true and bordered per the [border]. It's the area adjacent to
    /// [decoration.icon] and above the widgets that contain [helperText],
    /// [errorText], and [counterText].
  