diff --git a/java-client/src/test/java/org/opensearch/client/opensearch/model/BehaviorsTest.java b/java-client/src/test/java/org/opensearch/client/opensearch/model/BehaviorsTest.java
index c3e35373fa..cd10c73915 100644
--- a/java-client/src/test/java/org/opensearch/client/opensearch/model/BehaviorsTest.java
+++ b/java-client/src/test/java/org/opensearch/client/opensearch/model/BehaviorsTest.java
@@ -37,12 +37,14 @@
 import org.opensearch.client.opensearch._types.ErrorCause;
 import org.opensearch.client.opensearch._types.FieldValue;
 import org.opensearch.client.opensearch._types.GeoLocation;
+import org.opensearch.client.opensearch._types.GeoShapeRelation;
 import org.opensearch.client.opensearch._types.SortOptions;
 import org.opensearch.client.opensearch._types.SortOptionsBuilders;
 import org.opensearch.client.opensearch._types.SortOrder;
 import org.opensearch.client.opensearch._types.query_dsl.Query;
 import org.opensearch.client.opensearch._types.query_dsl.TermQuery;
 import org.opensearch.client.opensearch._types.query_dsl.WrapperQuery;
+import org.opensearch.client.opensearch._types.query_dsl.XyShapeQuery;
 import org.opensearch.client.util.MapBuilder;
 
 public class BehaviorsTest extends ModelTestCase {
@@ -58,6 +60,22 @@ public void testSingleKeyDictionary() {
         assertEquals("some-value", q.value().stringValue());
     }
 
+    @Test
+    public void testAdditionalPropertyOnClass() {
+        XyShapeQuery q = new XyShapeQuery.Builder().queryName("query-name")
+            .field("field-name")
+            .xyShape(_0 -> _0.relation(GeoShapeRelation.Disjoint))
+            .ignoreUnmapped(true)
+            .build();
+
+        q = checkJsonRoundtrip(q, "{\"field-name\":{\"relation\":\"disjoint\"},\"_name\":\"query-name\",\"ignore_unmapped\":true}");
+
+        assertEquals("query-name", q.queryName());
+        assertTrue(q.ignoreUnmapped());
+        assertEquals(GeoShapeRelation.Disjoint, q.xyShape().relation());
+        System.out.println(toJson(q));
+    }
+
     @Test
     public void testWrapperQuery() {
         WrapperQuery q = new WrapperQuery.Builder().query("encoded_query").build();