add Integer customization:

sdk/eventgrid/azure-messaging-eventgrid/src/main/java/com/azure/messaging/eventgrid/systemevents/AcsSmsReceivedEventData.java

@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) AutoRest Code Generator.
-
 package com.azure.messaging.eventgrid.systemevents;
 
 import com.azure.core.annotation.Fluent;
@@ -18,6 +17,7 @@
  */
 @Fluent
 public final class AcsSmsReceivedEventData extends AcsSmsEventBaseProperties {
+
     /*
      * The SMS content
      */
@@ -31,7 +31,7 @@ public final class AcsSmsReceivedEventData extends AcsSmsEventBaseProperties {
     /*
      * Number of segments in the message
      */
-    private int segmentCount;
+    private Integer segmentCount;
 
     /**
      * Creates an instance of AcsSmsReceivedEventData class.
@@ -41,7 +41,7 @@ public AcsSmsReceivedEventData() {
 
     /**
      * Get the message property: The SMS content.
-     * 
+     *
      * @return the message value.
      */
     public String getMessage() {
@@ -50,7 +50,7 @@ public String getMessage() {
 
     /**
      * Set the message property: The SMS content.
-     * 
+     *
      * @param message the message value to set.
      * @return the AcsSmsReceivedEventData object itself.
      */
@@ -61,7 +61,7 @@ public AcsSmsReceivedEventData setMessage(String message) {
 
     /**
      * Get the receivedTimestamp property: The time at which the SMS was received.
-     * 
+     *
      * @return the receivedTimestamp value.
      */
     public OffsetDateTime getReceivedTimestamp() {
@@ -70,7 +70,7 @@ public OffsetDateTime getReceivedTimestamp() {
 
     /**
      * Set the receivedTimestamp property: The time at which the SMS was received.
-     * 
+     *
      * @param receivedTimestamp the receivedTimestamp value to set.
      * @return the AcsSmsReceivedEventData object itself.
      */
@@ -81,20 +81,20 @@ public AcsSmsReceivedEventData setReceivedTimestamp(OffsetDateTime receivedTimes
 
     /**
      * Get the segmentCount property: Number of segments in the message.
-     * 
+     *
      * @return the segmentCount value.
      */
-    public int getSegmentCount() {
+    public Integer getSegmentCount() {
         return this.segmentCount;
     }
 
     /**
      * Set the segmentCount property: Number of segments in the message.
-     * 
+     *
      * @param segmentCount the segmentCount value to set.
      * @return the AcsSmsReceivedEventData object itself.
      */
-    public AcsSmsReceivedEventData setSegmentCount(int segmentCount) {
+    public AcsSmsReceivedEventData setSegmentCount(Integer segmentCount) {
         this.segmentCount = segmentCount;
         return this;
     }
@@ -146,7 +146,7 @@ public JsonWriter toJson(JsonWriter jsonWriter) throws IOException {
 
     /**
      * Reads an instance of AcsSmsReceivedEventData from the JsonReader.
-     * 
+     *
      * @param jsonReader The JsonReader being read.
      * @return An instance of AcsSmsReceivedEventData if the JsonReader was pointing to an instance of it, or null if it
      * was pointing to JSON null.
@@ -159,7 +159,6 @@ public static AcsSmsReceivedEventData fromJson(JsonReader jsonReader) throws IOE
             while (reader.nextToken() != JsonToken.END_OBJECT) {
                 String fieldName = reader.getFieldName();
                 reader.nextToken();
-
                 if ("messageId".equals(fieldName)) {
                     deserializedAcsSmsReceivedEventData.setMessageId(reader.getString());
                 } else if ("from".equals(fieldName)) {
@@ -177,7 +176,6 @@ public static AcsSmsReceivedEventData fromJson(JsonReader jsonReader) throws IOE
                     reader.skipChildren();
                 }
             }
-
             return deserializedAcsSmsReceivedEventData;
         });
     }

sdk/eventgrid/azure-messaging-eventgrid/swagger/src/main/java/EventGridCustomization.java

@@ -254,6 +254,11 @@ public void customize(LibraryCustomization customization, Logger logger) {
     public void customizeCommuicationSMSEvents(LibraryCustomization customization) {
         PackageCustomization packageModels = customization.getPackage("com.azure.messaging.eventgrid.systemevents");
         ClassCustomization classCustomization = packageModels.getClass("AcsSmsReceivedEventData");
+        classCustomization.customizeAst(ast -> {
+            ast.getClassByName("AcsSmsReceivedEventData").ifPresent(clazz -> {
+                clazz.getFieldByName("segmentCount").get().getVariable(0).setType("Integer");
+            });
+        });
 
         classCustomization.customizeAst(comp -> {
             ClassOrInterfaceDeclaration clazz = comp.getClassByName("AcsSmsReceivedEventData").get();