Fix partition NAME field to preserve public API

Author: S-Saranya1

.changes/next-release/feature-AWSSDKforJavav-0ca473f.json

@@ -1,6 +1,6 @@
 {
     "type": "feature",
-    "category": "AWS SDK for Java v",
+    "category": "AWS SDK for Java v2",
     "contributor": "",
     "description": "Migrate PartitionMetadata code generation from endpoints.json to partitions.json"
 }

codegen-lite/src/main/java/software/amazon/awssdk/codegen/lite/regions/PartitionMetadataGenerator.java

@@ -44,6 +44,18 @@
 
 public class PartitionMetadataGenerator implements PoetClass {
 
+    private static final Map<String, String> PARTITION_DISPLAY_NAMES =
+            ImmutableMap.<String, String>builder()
+                        .put("aws", "AWS Standard")
+                        .put("aws-cn", "AWS China")
+                        .put("aws-us-gov", "AWS GovCloud (US)")
+                        .put("aws-iso", "AWS ISO (US)")
+                        .put("aws-iso-b", "AWS ISOB (US)")
+                        .put("aws-iso-e", "AWS ISOE (Europe)")
+                        .put("aws-iso-f", "AWS ISOF")
+                        .put("aws-eusc", "AWS EUSC")
+                        .build();
+
     private final PartitionRegionsMetadata partition;
     private final String basePackage;
     private final String regionBasePackage;
@@ -85,7 +97,8 @@ public TypeSpec poetClass() {
                                           .build())
                        .addField(FieldSpec.builder(String.class, "NAME")
                                           .addModifiers(PRIVATE, FINAL, STATIC)
-                                          .initializer("$S", partition.getOutputs().getName())
+                                          .initializer("$S", PARTITION_DISPLAY_NAMES.getOrDefault(
+                                              partition.getId(), partition.getId()))
                                           .build())
                        .addField(FieldSpec.builder(String.class, "REGION_REGEX")
                                           .addModifiers(PRIVATE, FINAL, STATIC)

codegen-lite/src/test/resources/software/amazon/awssdk/codegen/lite/regions/partition-metadata.java

@@ -28,7 +28,7 @@ public final class AwsPartitionMetadata implements PartitionMetadata {
 
     private static final String ID = "aws";
 
-    private static final String NAME = "aws";
+    private static final String NAME = "AWS Standard";
 
     private static final String REGION_REGEX = "^(us|eu|ap|sa|ca|me|af|il|mx)\\-\\w+\\-\\d+$";