diff --git a/src/main/java/com/bitpay/sdk/model/invoice/BuyerFields.java b/src/main/java/com/bitpay/sdk/model/invoice/BuyerFields.java
index 0c1ec12b..fa36bd2d 100644
--- a/src/main/java/com/bitpay/sdk/model/invoice/BuyerFields.java
+++ b/src/main/java/com/bitpay/sdk/model/invoice/BuyerFields.java
@@ -8,6 +8,8 @@
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
 /**
+ * Buyer Fields.
+ *
  * @see <a href="https://developer.bitpay.com/reference/notifications-invoices">Invoice Webhook</a>
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
diff --git a/src/main/java/com/bitpay/sdk/model/invoice/InvoiceWebhook.java b/src/main/java/com/bitpay/sdk/model/invoice/InvoiceWebhook.java
index 93866ba7..79938bf1 100644
--- a/src/main/java/com/bitpay/sdk/model/invoice/InvoiceWebhook.java
+++ b/src/main/java/com/bitpay/sdk/model/invoice/InvoiceWebhook.java
@@ -11,6 +11,8 @@
 import java.util.Hashtable;
 
 /**
+ * Invoice Webhook.
+ *
  * @see <a href="https://developer.bitpay.com/reference/notifications-invoices">Invoice Webhook</a>
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
@@ -106,7 +108,7 @@ public void setExceptionStatus(String exceptionStatus) {
     }
 
     public BuyerFields getBuyerFields() {
-        return buyerFields;
+        return this.buyerFields;
     }
 
     public void setBuyerFields(BuyerFields buyerFields) {
@@ -114,7 +116,7 @@ public void setBuyerFields(BuyerFields buyerFields) {
     }
 
     public Hashtable<String, BigInteger> getPaymentSubtotals() {
-        return paymentSubtotals;
+        return this.paymentSubtotals;
     }
 
     public void setPaymentSubtotals(Hashtable<String, BigInteger> paymentSubtotals) {
diff --git a/src/main/java/com/bitpay/sdk/model/invoice/MinerFees.java b/src/main/java/com/bitpay/sdk/model/invoice/MinerFees.java
index 43fda933..88b1d28b 100644
--- a/src/main/java/com/bitpay/sdk/model/invoice/MinerFees.java
+++ b/src/main/java/com/bitpay/sdk/model/invoice/MinerFees.java
@@ -288,7 +288,7 @@ public void setWbtc(MinerFeesItem wbtc) {
      */
     @JsonIgnore
     public MinerFeesItem getMatic() {
-        return matic;
+        return this.matic;
     }
 
     /**
@@ -308,7 +308,7 @@ public void setMatic(MinerFeesItem matic) {
      */
     @JsonIgnore
     public MinerFeesItem getUsdcM() {
-        return usdcM;
+        return this.usdcM;
     }
 
     /**
diff --git a/src/main/java/com/bitpay/sdk/model/invoice/SupportedTransactionCurrencies.java b/src/main/java/com/bitpay/sdk/model/invoice/SupportedTransactionCurrencies.java
index 8437d0de..b91594f3 100644
--- a/src/main/java/com/bitpay/sdk/model/invoice/SupportedTransactionCurrencies.java
+++ b/src/main/java/com/bitpay/sdk/model/invoice/SupportedTransactionCurrencies.java
@@ -450,7 +450,7 @@ public void setWbtcM(SupportedTransactionCurrency wbtcM) {
      */
     @JsonIgnore
     public SupportedTransactionCurrency getShibM() {
-        return shibM;
+        return this.shibM;
     }
 
     /**
diff --git a/src/main/java/com/bitpay/sdk/model/payout/PayoutWebhook.java b/src/main/java/com/bitpay/sdk/model/payout/PayoutWebhook.java
index 6363da91..7ac07c91 100644
--- a/src/main/java/com/bitpay/sdk/model/payout/PayoutWebhook.java
+++ b/src/main/java/com/bitpay/sdk/model/payout/PayoutWebhook.java
@@ -5,6 +5,7 @@
 
 package com.bitpay.sdk.model.payout;
 
+import com.fasterxml.jackson.annotation.JsonSetter;
 import java.math.BigDecimal;
 import java.time.ZonedDateTime;
 import java.util.Hashtable;
@@ -27,7 +28,7 @@ class PayoutWebhook {
     protected String email;
     protected String reference;
     protected String label;
-    protected String notificationURL;
+    protected String notificationUrl;
     protected String notificationEmail;
     protected ZonedDateTime effectiveDate;
     protected ZonedDateTime requestDate;
@@ -115,16 +116,17 @@ public void setLabel(String label) {
         this.label = label;
     }
 
-    public String getNotificationURL() {
-        return this.notificationURL;
+    public String getNotificationUrl() {
+        return this.notificationUrl;
     }
 
-    public void setNotificationURL(String notificationURL) {
-        this.notificationURL = notificationURL;
+    @JsonSetter("notificationURL")
+    public void setNotificationUrl(String notificationUrl) {
+        this.notificationUrl = notificationUrl;
     }
 
     public String getNotificationEmail() {
-        return notificationEmail;
+        return this.notificationEmail;
     }
 
     public void setNotificationEmail(String notificationEmail) {
@@ -132,7 +134,7 @@ public void setNotificationEmail(String notificationEmail) {
     }
 
     public ZonedDateTime getEffectiveDate() {
-        return effectiveDate;
+        return this.effectiveDate;
     }
 
     public void setEffectiveDate(ZonedDateTime effectiveDate) {
@@ -140,7 +142,7 @@ public void setEffectiveDate(ZonedDateTime effectiveDate) {
     }
 
     public ZonedDateTime getRequestDate() {
-        return requestDate;
+        return this.requestDate;
     }
 
     public void setRequestDate(ZonedDateTime requestDate) {
@@ -148,7 +150,7 @@ public void setRequestDate(ZonedDateTime requestDate) {
     }
 
     public String getStatus() {
-        return status;
+        return this.status;
     }
 
     public void setStatus(String status) {
@@ -156,7 +158,7 @@ public void setStatus(String status) {
     }
 
     public List<PayoutTransaction> getTransactions() {
-        return transactions;
+        return this.transactions;
     }
 
     public void setTransactions(List<PayoutTransaction> transactions) {
diff --git a/src/main/java/com/bitpay/sdk/model/payout/RecipientWebhook.java b/src/main/java/com/bitpay/sdk/model/payout/RecipientWebhook.java
index 3bcfafa2..232df2c2 100644
--- a/src/main/java/com/bitpay/sdk/model/payout/RecipientWebhook.java
+++ b/src/main/java/com/bitpay/sdk/model/payout/RecipientWebhook.java
@@ -22,7 +22,7 @@ class RecipientWebhook {
     protected String shopperId;
 
     public String getEmail() {
-        return email;
+        return this.email;
     }
 
     public void setEmail(String email) {
@@ -30,7 +30,7 @@ public void setEmail(String email) {
     }
 
     public String getLabel() {
-        return label;
+        return this.label;
     }
 
     public void setLabel(String label) {
@@ -38,7 +38,7 @@ public void setLabel(String label) {
     }
 
     public String getStatus() {
-        return status;
+        return this.status;
     }
 
     public void setStatus(String status) {
@@ -46,7 +46,7 @@ public void setStatus(String status) {
     }
 
     public String getId() {
-        return id;
+        return this.id;
     }
 
     public void setId(String id) {
@@ -54,7 +54,7 @@ public void setId(String id) {
     }
 
     public String getShopperId() {
-        return shopperId;
+        return this.shopperId;
     }
 
     public void setShopperId(String shopperId) {
diff --git a/src/test/java/com/bitpay/sdk/model/payout/PayoutWebhookTest.java b/src/test/java/com/bitpay/sdk/model/payout/PayoutWebhookTest.java
index 91235a02..659b8632 100644
--- a/src/test/java/com/bitpay/sdk/model/payout/PayoutWebhookTest.java
+++ b/src/test/java/com/bitpay/sdk/model/payout/PayoutWebhookTest.java
@@ -104,9 +104,9 @@ public void testManipulateLabel() {
     public void testManipulateNotificationURL() {
         PayoutWebhook testedClass = this.getTestedClass();
         String expected = "someValue";
-        testedClass.setNotificationURL(expected);
+        testedClass.setNotificationUrl(expected);
 
-        Assertions.assertSame(expected, testedClass.getNotificationURL());
+        Assertions.assertSame(expected, testedClass.getNotificationUrl());
     }
 
     @Test