Linking Higher & Lower Class Docs (#29758)
* Adding linking between higher and lower level classes in the API Docs. ref:#22859
* Fixed links between classes.
diff --git a/packages/flutter/lib/src/painting/gradient.dart b/packages/flutter/lib/src/painting/gradient.dart
index cba3411..df4043a 100644
--- a/packages/flutter/lib/src/painting/gradient.dart
+++ b/packages/flutter/lib/src/painting/gradient.dart
@@ -64,8 +64,8 @@
///
/// See also:
///
-/// * [dart:ui.Gradient], the class in the [dart:ui] library that is
-/// encapsulated by this class and its subclasses.
+/// * [Gradient](https://api.flutter.dev/flutter/dart-ui/Gradient-class.html), the class in the [dart:ui] library.
+///
@immutable
abstract class Gradient {
/// Initialize the gradient's colors and stops.
diff --git a/packages/flutter/lib/src/painting/strut_style.dart b/packages/flutter/lib/src/painting/strut_style.dart
index 5b9a1e9..f1a0896 100644
--- a/packages/flutter/lib/src/painting/strut_style.dart
+++ b/packages/flutter/lib/src/painting/strut_style.dart
@@ -44,6 +44,10 @@
/// leading plus ascent. Each line's spacing below the baseline will be at least as
/// tall as the half leading plus descent.
///
+/// See also:
+///
+/// * [StrutStyle](https://api.flutter.dev/flutter/dart-ui/StrutStyle-class.html), the class in the [dart:ui] library.
+///
/// ### Fields and their default values.
// ///////////////////////////////////////////////////////////////////////////
diff --git a/packages/flutter/lib/src/painting/text_style.dart b/packages/flutter/lib/src/painting/text_style.dart
index 0a928fd..285d2db 100644
--- a/packages/flutter/lib/src/painting/text_style.dart
+++ b/packages/flutter/lib/src/painting/text_style.dart
@@ -292,6 +292,8 @@
/// * [RichText], the widget for showing a paragraph of mix-style text.
/// * [TextSpan], the class that wraps a [TextStyle] for the purposes of
/// passing it to a [RichText].
+/// * [TextStyle](https://api.flutter.dev/flutter/dart-ui/TextStyle-class.html), the class in the [dart:ui] library.
+///
@immutable
class TextStyle extends Diagnosticable {
/// Creates a text style.
diff --git a/packages/flutter/lib/src/widgets/image.dart b/packages/flutter/lib/src/widgets/image.dart
index d941266..8fc167c 100644
--- a/packages/flutter/lib/src/widgets/image.dart
+++ b/packages/flutter/lib/src/widgets/image.dart
@@ -132,6 +132,8 @@
/// * [new Ink.image], which is the preferred way to show an image in a
/// material application (especially if the image is in a [Material] and will
/// have an [InkWell] on top of it).
+/// * [Image](https://api.flutter.dev/flutter/dart-ui/Image-class.html), the class in the [dart:ui] library.
+///
class Image extends StatefulWidget {
/// Creates a widget that displays an image.
///
