$types->getInput() doesn't work as expected about graphql-doctrine HOT 1 CLOSED

<?php

require '../vendor/autoload.php';

use Doctrine\ORM\EntityManager;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\ORM\Tools\SchemaValidator;
use Doctrine\ORM\Tools\Setup;
use GraphQL\Doctrine\Types;
use GraphQL\Type\Definition\ObjectType;
use GraphQL\Type\Definition\Type;
use GraphQL\Type\Schema;

/**
 * @ORM\Entity
 */
class User
{
    /**
     * @var null|int
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     * @ORM\Column(type="integer")
     */
    private $id;

    public function getId(): ?int
    {
        return $this->id;
    }
}

/**
 * @ORM\Entity
 */
class RankMonitor
{
    /**
     * @var int
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @var User
     * @ORM\ManyToOne(targetEntity="User")
     * @ORM\JoinColumn(name="userId", referencedColumnName="id", nullable=false)
     */
    private $user;

    /**
     * @return User
     */
    public function getUser(): User
    {
        return $this->user;
    }

    /**
     * @param User $user
     *
     * @return RankMonitor
     */
    public function setUser(User $user): RankMonitor
    {
        $this->user = $user;

        return $this;
    }
}

// Create the entity manager
$config = Setup::createAnnotationMetadataConfiguration([__DIR__], true, null, null, false);
$connection = ['url' => 'sqlite:///:memory:'];
$entityManager = EntityManager::create($connection, $config);

// Configure the type registry
$types = new Types($entityManager);

// Build your Schema
$schema = new Schema([
    'query' => new ObjectType([
        'name' => 'query',
        'fields' => [
            'test' => [
                'type' => Type::int(),
                'resolve' => function ($root, $args) use ($types): int {
                    return 1;
                },
            ],
        ],
    ]),
    'mutation' => new ObjectType([
        'name' => 'mutation',
        'fields' => [
            'createRankMonitor' => [
                'type' => Type::nonNull($types->getOutput(RankMonitor::class)),
                'args' => [
                    'input' => Type::nonNull($types->getInput(RankMonitor::class)),
                ],
                'resolve' => function ($root, $args, $context) {
                    return new RankMonitor();
                },
            ],
        ],
    ]),
]);

// check everything is OK in Doctrine
$validator = new SchemaValidator($entityManager);
$errors = $validator->validateMapping();
var_dump($errors);

// check everything is OK in GraphQL
$schema->assertValid();

echo 'OK' . PHP_EOL;