Можете объяснить назначение и роль объекта BuildContext в Flutter?

In Flutter, the BuildContext object represents a reference to the location of a widget in the widget tree. It is used for:

• Accessing parent widgets and their state.
• Finding and using data from the context, such as themes, localization, navigation.
• Calling methods that require a context, for example, Navigator.of(context) for screen transitions.

Example of usage:

Widget build(BuildContext context) {
  final theme = Theme.of(context);
  return Text('Hello', style: TextStyle(color: theme.primaryColor));
}

Thus, BuildContext is a key mechanism for interaction and accessing information within the Flutter widget tree.