Method demo

examples/demo.php:532–558

()

class MethodTemplateDemo
{
    public function demo(): void
    {
        $locator = new ServiceLocator();
        $locator->get(Pen::class)->write();               // class-string<T> → T

        Factory::create(Pen::class)->write();             // static @template
        resolve(Marker::class)->highlight();              // function @template

        $mapper = new ObjectMapper();
        $mapped = $mapper->wrap(new Pen());
        $mapped->first();                         // → Pen (T resolved from argument)

        $mapper->wrap(new Product())->first()->getPrice(); // new expression arg → Product

        // Chained instantiation preserves constructor-inferred generics
        (new ObjectMapper())->wrap(new Pen())->first()->write(); // (new ...)->method() chain with generics

        // Variadic class-string<T> → union return type
        $locator2 = new ServiceLocator();
        $union = $locator2->getAny(Pen::class, Marker::class);
        $union->write();                                  // A|B from variadic class-string<T>
        $union->highlight();

        // Nested generic return: @return Box<T> with class-string<T> param
        $boxed = $locator->wrap(Pen::class);
        $boxed->unwrap()->write();                        // Box<T>::unwrap() → Pen
    }
}