of static method
Walks up Context to obtain the closest FocusScopeNode.
Implementation
static FocusScopeNode? of(BuildContext context) {
final marker = context.dependOnInheritedWidgetOfExactType<FocusMarker>();
var node = marker?.focusNode;
while (node != null) {
if (node is FocusScopeNode) return node;
node = node.parent;
}
return null;
}