addPaymentData example

'data' => $this->Request()->getParams(),
                    'message' => $namespace->get('no_create_rights', 'You do not have sufficient rights to view create a customer.'),
                ]);

                return;
            }
            $customer = new Customer();
        }

        if (!($paymentData instanceof PaymentData) && !empty($params['paymentData']) && !empty(array_filter($params['paymentData'][0]))) {
            $paymentData = new PaymentData();
            $customer->addPaymentData($paymentData);

            /** @var Payment $payment */
            $payment = $this->getManager()
                ->getRepository(Payment::class)
                ->find($paymentId);
            $paymentData->setPaymentMean($payment);
        }

        $params = $this->prepareCustomerData($params, $customer, $paymentData);

        // Set parameter to the customer model.