Swap HMAC Validation method parameters

src/main/java/com/adyen/util/HMACValidator.java

@@ -73,11 +73,12 @@ public String calculateHMAC(NotificationRequestItem notificationRequestItem, Str
         return calculateHMAC(getDataToSign(notificationRequestItem), key);
     }
 
-    // Calculate HMAC for BankingWebhooks and ManagementWebhooks (Generic webhooks)
-    public boolean validateHMAC(String hmacKey, String hmacSignature, String payload) throws SignatureException {
-        String calculatedSign = calculateHMAC(payload, hmacSignature);
-        final byte [] expectedSign = calculatedSign.getBytes(StandardCharsets.UTF_8);
-        final byte[] merchantSign =  hmacKey.getBytes(StandardCharsets.UTF_8);
+    //Calculate HMAC for BankingWebhooks and ManagementWebhooks (Generic webhooks)
+    //First parameter is hmacSignature which is get from webhook and the second hmackey which is configured
+    public boolean validateHMAC(String hmacSignature, String hmacKey, String payload) throws SignatureException {
+        String calculatedSign = calculateHMAC(payload, hmacKey);
+        final byte[] expectedSign = calculatedSign.getBytes(StandardCharsets.UTF_8);
+        final byte[] merchantSign = hmacSignature.getBytes(StandardCharsets.UTF_8);
         return MessageDigest.isEqual(expectedSign, merchantSign);
     }