goToPaymentStep() {
			const selectedKey = this.getModel().getProperty("/SelectedPayment");
			const oElement = this.byId("paymentTypeStep");
			switch (selectedKey) {
				case "Bank Transfer":
					oElement.setNextStep(this.byId("bankAccountStep"));
					break;
				case "Cash on Delivery":
					oElement.setNextStep(this.byId("cashOnDeliveryStep"));
					break;
				case "Credit Card":
				default:
					oElement.setNextStep(this.byId("creditCardStep"));
					break;
			}
		}
Shows next WizardStep according to user selection