Update MapTest.java added getValue() to enum

Author: eric-rolli

samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/MapTest.java

@@ -55,8 +55,12 @@ public enum InnerEnum {
       this.value = value;
     }
 
-    @Override
     @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
     public String toString() {
       return String.valueOf(value);
     }