很难从createCustomer对象中检索customer\u id getId()以传递给createCustomerCard

这是我的代码,这是我从中使用的示例 here

$createcustomer_api = new \SquareConnect\Api\CustomersApi();
$createcustomer_result = $createcustomer_api->createCustomer(array(
  'given_name' => 'Amelia',
  'family_name' => 'Earhart',
  'email_address' => 'Amelia.Earhart@example.com',
  'address' => array(
    'address_line_1' => '500 Electric Ave',
    'address_line_2' => 'Suite 600',
    'locality' => 'New York',
    'administrative_district_level_1' => 'NY',
    'postal_code' => '10003',
    'country' => 'US'
  ),
  'phone_number' => '1-555-555-0122',
  'reference_id' => 'YOUR_REFERENCE_ID',
  'note' => 'a customer'
));

SquareConnect\Model\CreateCustomerResponse Object
(
    [errors:protected] => 
    [customer:protected] => SquareConnect\Model\Customer Object
        (
            [id:protected] => CBASEHtp6YVU8AirkMv1lrVMyoIgAQ
            [created_at:protected] => 2017-09-27T23:19:44.62Z
            [updated_at:protected] => 2017-09-27T23:19:44.62Z
            [cards:protected] => 
            [given_name:protected] => Amelia
            [family_name:protected] => Earhart
            [nickname:protected] => 
            [company_name:protected] => 
            [email_address:protected] => Amelia.Earhart@example.com
            [address:protected] => SquareConnect\Model\Address Object
                (
                    [address_line_1:protected] => 500 Electric Ave
                    [address_line_2:protected] => Suite 600
                    [address_line_3:protected] => 
                    [locality:protected] => New York
                    [sublocality:protected] => 
                    [sublocality_2:protected] => 
                    [sublocality_3:protected] => 
                    [administrative_district_level_1:protected] => NY
                    [administrative_district_level_2:protected] => 
                    [administrative_district_level_3:protected] => 
                    [postal_code:protected] => 10003
                    [country:protected] => US
                    [first_name:protected] => 
                    [last_name:protected] => 
                    [organization:protected] => 
                )

            [phone_number:protected] => 1-555-555-0122
            [reference_id:protected] => YOUR_REFERENCE_ID
            [note:protected] => a customer
            [preferences:protected] => SquareConnect\Model\CustomerPreferences Object
                (
                    [email_unsubscribed:protected] => 
                )

            [groups:protected] => 
        )

)

现在,我需要创建客户卡,以便与客户关联,以便将来进行定期付款。

$createcard_api = new \SquareConnect\Api\CustomersApi();
$createcard_result = $createcard_api->createCustomerCard($createcustomer_result->getId(), array(
  'card_nonce' => $nonce,
  'billing_address' => array(
    'address_line_1' => '1455 Market St',
    'address_line_2' => 'Suite 600',
    'locality' => 'San Francisco',
    'administrative_district_level_1' => 'CA',
    'postal_code' => '94103',
    'country' => 'US'
  ),
  'cardholder_name' => 'Amelia Earhart'
));

据我所知,square SDK有一个内置函数 getId() this 被称为like $customer->getId() ,但根据 this ->getId() 给我的 createCustomer 对象

所以我试着打电话给 getId()

$createcustomer_result->getId()

但在我的代码中,我得到了错误

Fatal error: Call to undefined method SquareConnect\Model\CreateCustomerResponse::getId()

如何正确地从 创建客户 ?