From daea62266371578f1c9edf238935b2c14cd72180 Mon Sep 17 00:00:00 2001
From: box-sdk-build <sdk-build@box.com>
Date: Thu, 6 Aug 2026 07:48:01 -0700
Subject: [PATCH 1/4] chore: Update `.codegen.json` with commit hash of
 `codegen` and `openapi` spec [skip ci]

---
 .codegen.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.codegen.json b/.codegen.json
index dac0bbf22..cb4b60274 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "7b5a612", "specHash": "86fcc6c", "version": "5.15.0" }
+{ "engineHash": "fafa70b", "specHash": "86fcc6c", "version": "5.15.0" }

From 8faef6b780829148d940b9c614b2c25bcc87e8af Mon Sep 17 00:00:00 2001
From: box-sdk-build <sdk-build@box.com>
Date: Fri, 21 Aug 2026 08:15:46 -0700
Subject: [PATCH 2/4] chore: Update `.codegen.json` with commit hash of
 `codegen` and `openapi` spec [skip ci]

---
 .codegen.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.codegen.json b/.codegen.json
index cb4b60274..78b6ca11c 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "fafa70b", "specHash": "86fcc6c", "version": "5.15.0" }
+{ "engineHash": "a50b08a", "specHash": "86fcc6c", "version": "5.15.0" }

From 7f80e21601c3f148e16e34a52b5e4f6ca8e31796 Mon Sep 17 00:00:00 2001
From: box-sdk-build <sdk-build@box.com>
Date: Tue, 25 Aug 2026 01:41:41 -0700
Subject: [PATCH 3/4] chore: Update `.codegen.json` with commit hash of
 `codegen` and `openapi` spec [skip ci]

---
 .codegen.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.codegen.json b/.codegen.json
index 78b6ca11c..3cb1641d2 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "a50b08a", "specHash": "86fcc6c", "version": "5.15.0" }
+{ "engineHash": "a50b08a", "specHash": "3599cec", "version": "5.15.0" }

From 37cf7eab4b478d50315b5b01a9f39ee42ce86564 Mon Sep 17 00:00:00 2001
From: box-sdk-build <sdk-build@box.com>
Date: Tue, 25 Aug 2026 01:43:42 -0700
Subject: [PATCH 4/4] fix: avoid null chunk when file size is a multiple of
 part size (box/box-codegen#980)

---
 .codegen.json                                 |  2 +-
 .../sdkgen/internal/utils/UtilsManager.java   | 46 ++++++++++++-------
 2 files changed, 31 insertions(+), 17 deletions(-)

diff --git a/.codegen.json b/.codegen.json
index 3cb1641d2..e4cb3ac7c 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "a50b08a", "specHash": "3599cec", "version": "5.15.0" }
+{ "engineHash": "1cfd1c4", "specHash": "3599cec", "version": "5.15.0" }
diff --git a/src/main/java/com/box/sdkgen/internal/utils/UtilsManager.java b/src/main/java/com/box/sdkgen/internal/utils/UtilsManager.java
index 665c23722..7832c8dcd 100644
--- a/src/main/java/com/box/sdkgen/internal/utils/UtilsManager.java
+++ b/src/main/java/com/box/sdkgen/internal/utils/UtilsManager.java
@@ -34,6 +34,7 @@
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.Objects;
 import java.util.Set;
 import java.util.UUID;
@@ -311,15 +312,14 @@ public static String hexToBase64(String hex) {
   public static Iterator<InputStream> iterateChunks(
       InputStream stream, long chunkSize, long fileSize) {
     return new Iterator<InputStream>() {
-      private boolean streamIsFinished = false;
+      private InputStream nextChunk;
+      private boolean isNextChunkPrepared = false;
 
-      @Override
-      public boolean hasNext() {
-        return !streamIsFinished;
-      }
-
-      @Override
-      public InputStream next() {
+      private void prepareNext() {
+        if (isNextChunkPrepared) {
+          return;
+        }
+        isNextChunkPrepared = true;
         try {
           byte[] buffer = new byte[(int) chunkSize];
           int bytesRead = 0;
@@ -327,25 +327,39 @@ public InputStream next() {
           while (bytesRead < chunkSize) {
             int read = stream.read(buffer, bytesRead, (int) (chunkSize - bytesRead));
             if (read == -1) {
-              // End of stream
-              streamIsFinished = true;
               break;
             }
             bytesRead += read;
           }
 
           if (bytesRead == 0) {
-            // No more data to yield
-            streamIsFinished = true;
-            return null;
+            nextChunk = null;
+            return;
           }
 
-          // Return the chunk as a ByteArrayInputStream
-          return new ByteArrayInputStream(buffer, 0, bytesRead);
-        } catch (Exception e) {
+          nextChunk = new ByteArrayInputStream(buffer, 0, bytesRead);
+        } catch (IOException e) {
           throw new RuntimeException("Error reading from stream", e);
         }
       }
+
+      @Override
+      public boolean hasNext() {
+        prepareNext();
+        return nextChunk != null;
+      }
+
+      @Override
+      public InputStream next() {
+        prepareNext();
+        if (nextChunk == null) {
+          throw new NoSuchElementException();
+        }
+        InputStream result = nextChunk;
+        nextChunk = null;
+        isNextChunkPrepared = false;
+        return result;
+      }
     };
   }