[go_router]Updates documentations around GoRouter.of, GoRouter.maybeOf, and BuildContext extension. (#4176)

fixes https://github.com/flutter/flutter/issues/121506

packages/go_router/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 8.0.4
+
+- Updates documentations around `GoRouter.of`, `GoRouter.maybeOf`, and `BuildContext` extension. 
+
+
 ## 8.0.3
 
 - Makes namedLocation and route name related APIs case sensitive.

packages/go_router/lib/src/misc/extensions.dart

@@ -10,6 +10,8 @@ import '../router.dart';
 /// context.go('/');
 extension GoRouterHelper on BuildContext {
   /// Get a location from route name and parameters.
+  ///
+  /// This method can't be called during redirects.
   String namedLocation(
     String name, {
     Map<String, String> pathParameters = const <String, String>{},

packages/go_router/lib/src/router.dart

@@ -466,6 +466,8 @@ class GoRouter extends ChangeNotifier implements RouterConfig<RouteMatchList> {
   }
 
   /// Find the current GoRouter in the widget tree.
+  ///
+  /// This method throws when it is called during redirects.
   static GoRouter of(BuildContext context) {
     final InheritedGoRouter? inherited =
         context.dependOnInheritedWidgetOfExactType<InheritedGoRouter>();
@@ -474,6 +476,8 @@ class GoRouter extends ChangeNotifier implements RouterConfig<RouteMatchList> {
   }
 
   /// The current GoRouter in the widget tree, if any.
+  ///
+  /// This method returns null when it is called during redirects.
   static GoRouter? maybeOf(BuildContext context) {
     final InheritedGoRouter? inherited =
         context.dependOnInheritedWidgetOfExactType<InheritedGoRouter>();

packages/go_router/pubspec.yaml

@@ -1,7 +1,7 @@
 name: go_router
 description: A declarative router for Flutter based on Navigation 2 supporting
   deep linking, data-driven routes and more
-version: 8.0.3
+version: 8.0.4
 repository: https://github.com/flutter/packages/tree/main/packages/go_router
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+go_router%22