[CC-2673] Add wero method.

Author: Ryouzanpaku

src/test/java/com/unzer/payment/integration/resources/PaypageV2Test.java

@@ -21,6 +21,7 @@
 
 import java.math.BigDecimal;
 import java.util.Date;
+import java.util.EnumMap;
 import java.util.HashMap;
 import java.util.stream.Stream;
 
@@ -220,7 +221,7 @@ public static Stream<Arguments> getPaymentMethodsConfigs() {
         withMixedWeroConfig.put("cards", enabledConfig);
         withMixedWeroConfig.put("wero", weroConfig1);
 
-        HashMap<PaypageV2.MethodName, PaymentMethodConfig> withEnumMethodNames = new HashMap<>();
+        EnumMap<PaypageV2.MethodName, PaymentMethodConfig> withEnumMethodNames = new EnumMap<>(PaypageV2.MethodName.class);
         withEnumMethodNames.put(PaypageV2.MethodName.CARDS, enabledConfig);
         withEnumMethodNames.put(PaypageV2.MethodName.PAYPAL, enabledConfig);
         withEnumMethodNames.put(PaypageV2.MethodName.PAYLATER_INSTALLMENT, enabledConfig);