def METHOD_NAME(client, response):
    """Create a new customer."""
    response.post("https://api.mollie.com/v2/customers", "customer_new")
    customer = client.customers.create(
        {
            "name": "Customer A",
            "email": "customer@example.org",
            "locale": "nl_NL",
        }
    )
    assert isinstance(customer, Customer)
    assert customer.id == CUSTOMER_ID