Added a CHANGELOG entry, made the getters nullable and removed extra …

…white space

Signed-off-by: Dan Cecoi <Dan.Cecoi@sas.com>

CHANGELOG.md

@@ -45,6 +45,7 @@ This section is for maintaining a changelog for all breaking changes for the cli
 ### Fixed
 - Fixed error when deserializing a normalizer without 'type' ([#1111](https://github.com/opensearch-project/opensearch-java/pull/1111))
 - Fixed deserialization of SearchRequest when `_source` is an array ([#1117](https://github.com/opensearch-project/opensearch-java/pull/1117))
+- Removed null constraints on NodeInfo fields that are returned null from Amazon OpenSearch Service ([#1131](https://github.com/opensearch-project/opensearch-java/pull/1131))
 
 ### Security
 

java-client/src/main/java/org/opensearch/client/opensearch/nodes/info/NodeInfo.java

@@ -176,6 +176,7 @@ public final String buildType() {
      * <p>
      * API name: {@code host}
      */
+    @Nullable
     public final String host() {
         return this.host;
     }
@@ -193,6 +194,7 @@ public final NodeInfoHttp http() {
      * <p>
      * API name: {@code ip}
      */
+    @Nullable
     public final String ip() {
         return this.ip;
     }
@@ -302,6 +304,7 @@ public final NodeInfoTransport transport() {
      * <p>
      * API name: {@code transport_address}
      */
+    @Nullable
     public final String transportAddress() {
         return this.transportAddress;
     }
@@ -834,7 +837,7 @@ public final Builder transport(Function<NodeInfoTransport.Builder, ObjectBuilder
          * <p>
          * API name: {@code transport_address}
          */
-        public final Builder transportAddress(@Nullable  String value) {
+        public final Builder transportAddress(@Nullable String value) {
             this.transportAddress = value;
             return this;
         }