Update ParentWithNullable.java added getValue() to enum

Author: eric-rolli

samples/server/petstore/jaxrs/jersey3/src/gen/java/org/openapitools/model/ParentWithNullable.java

@@ -50,8 +50,12 @@ public enum TypeEnum {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }