object(MercadoPago\Preference)#14 (34) {
  ["_last":protected]=>
  NULL
  ["error":protected]=>
  object(MercadoPago\RecuperableError)#159 (4) {
    ["message"]=>
    string(20) "invalid access token"
    ["status"]=>
    NULL
    ["error"]=>
    string(0) ""
    ["causes"]=>
    array(0) {
    }
  }
  ["_pagination_params":protected]=>
  NULL
  ["_empty":protected]=>
  bool(false)
  ["id":protected]=>
  NULL
  ["auto_return":protected]=>
  NULL
  ["back_urls":protected]=>
  NULL
  ["notification_url":protected]=>
  NULL
  ["init_point":protected]=>
  NULL
  ["sandbox_init_point":protected]=>
  NULL
  ["operation_type":protected]=>
  NULL
  ["additional_info":protected]=>
  NULL
  ["external_reference":protected]=>
  string(18) "EXTERNAL_REFERENCE"
  ["expires":protected]=>
  NULL
  ["expiration_date_from":protected]=>
  NULL
  ["expiration_date_to":protected]=>
  NULL
  ["date_of_expiration":protected]=>
  NULL
  ["collector_id":protected]=>
  NULL
  ["client_id":protected]=>
  NULL
  ["marketplace":protected]=>
  NULL
  ["marketplace_fee":protected]=>
  NULL
  ["differential_pricing":protected]=>
  NULL
  ["payment_methods":protected]=>
  array(1) {
    ["excluded_payment_types"]=>
    array(1) {
      [0]=>
      array(1) {
        ["id"]=>
        string(6) "ticket"
      }
    }
  }
  ["items":protected]=>
  array(1) {
    [0]=>
    object(MercadoPago\Item)#140 (12) {
      ["_last":protected]=>
      NULL
      ["error":protected]=>
      NULL
      ["_pagination_params":protected]=>
      NULL
      ["_empty":protected]=>
      bool(false)
      ["id":protected]=>
      NULL
      ["title":protected]=>
      string(12) "Test Product"
      ["description":protected]=>
      NULL
      ["category_id":protected]=>
      NULL
      ["picture_url":protected]=>
      NULL
      ["currency_id":protected]=>
      string(3) "CPL"
      ["quantity":protected]=>
      int(1)
      ["unit_price":protected]=>
      float(100)
    }
  }
  ["payer":protected]=>
  NULL
  ["shipments":protected]=>
  NULL
  ["date_created":protected]=>
  NULL
  ["sponsor_id":protected]=>
  NULL
  ["processing_modes":protected]=>
  NULL
  ["binary_mode":protected]=>
  NULL
  ["taxes":protected]=>
  NULL
  ["statement_descriptor":protected]=>
  NULL
  ["metadata":protected]=>
  NULL
  ["tracks":protected]=>
  NULL
}