Specifying required and optional parameters via constructor

<?php
require 'examples/boot.php';

use Cognesy\Instructor\StructuredOutput;

class UserWithConstructor
{
    public string $name;
    private ?int $age;
    private string $location;
    private string $password;

    public function __construct(
        string $name,                 // required - required in constructor, required internally
        int $age,                     // required - required in constructor, even if nullable internally
        ?string $location,            // optional - nullable in constructor, even if required internally
        string $password = '123admin' // optional - has a default value, even if required internally
    ) {
        $this->name = $name;
        $this->age = $age;
        $this->location = $location ?? '';
        $this->password = $password;
    }

    public function getAge(): int {
        return $this->age;
    }

    public function getLocation(): string {
        return $this->location;
    }

    public function getPassword(): string {
        return $this->password;
    }
}

$text = <<<TEXT
    Jason is 25 years old.
    TEXT;


$user = (new StructuredOutput)
    ->withMessages($text)
    ->withResponseClass(UserWithConstructor::class)
    ->get();

dump($user);

assert($user->name === "Jason");
assert($user->getAge() === 25);
assert($user->getPassword() === '123admin');
assert($user->getLocation() === ''); // default value for location
?>