Modify S3Object#Size member type from integer to long

.changes/next-release/bugfix-AmazonS3-e1a5575.json

@@ -0,0 +1,5 @@
+{
+    "category": "Amazon S3", 
+    "type": "bugfix", 
+    "description": "Modify type of S3Object#size member from integer to long. This is a breaking change for customers who are using the size() method currently"
+}

codegen/src/main/java/software/amazon/awssdk/codegen/customization/processors/DefaultCustomizationProcessor.java

@@ -29,11 +29,11 @@ public static CodegenCustomizationProcessor getProcessorFor(
 
         return new CodegenCustomizationProcessorChain(
                 new MetadataModifiersProcessor(config.getCustomServiceMetadata()),
+                new RenameShapesProcessor(config.getRenameShapes()),
                 new ShapeModifiersProcessor(config.getShapeModifiers()),
                 new ShapeSubstitutionsProcessor(config.getShapeSubstitutions()),
                 new OperationModifiersProcessor(config.getOperationModifiers()),
-                new RemoveExceptionMessagePropertyProcessor(),
-                new RenameShapesProcessor(config.getRenameShapes())
+                new RemoveExceptionMessagePropertyProcessor()
         );
     }
 }

services/s3/src/main/resources/codegen-resources/customization.config

@@ -3,6 +3,17 @@
         "Error" : "S3Error",
         "Object" : "S3Object"
     },
+    "shapeModifiers": {
+        "S3Object": {
+            "modify":[
+            {
+                "Size": {
+                    "emitAsType": "long"
+                }
+            }
+            ]
+        }
+    },
     "serviceSpecificClientConfigClass": "S3Configuration",
     "attachPayloadTraitToMember" : {
         "GetBucketLocationOutput": "LocationConstraint"