Method demo

examples/demo.php:2277–2295

()

class UnsetDemo
{
    public function demo(): void
    {
        $pen = new Pen('blue');
        $pen->write();                    // resolves to Pen
        unset($pen);
        // Try: $pen->  — no completions (variable was unset)

        // Re-assigning after unset restores type
        $tool = new Pen('red');
        unset($tool);
        $tool = new Marker();
        $tool->highlight();               // resolves to Marker

        // unset only affects targeted variable
        $pen2 = new Pen('green');
        $pencil = new Pencil();
        unset($pen2);
        $pencil->sketch();                // still resolves to Pencil
    }
}