public ObjectMapper create()
      {
         if (options.containsKey(Option.FIELD_ACCESS))
         {
               return new FieldBasedJsonMapper(options);               
         }

         throw new UnsupportedOperationException();
      }
Create an ObjectMapper based on the options provided to the factory.

@return a custom ObjectMapper supporting the requested options
src/main/java/com/zaxxer/hikari/json/JsonFactory.java