Spring boot: how to set the embedded server's sessionIdManger and sessionHandler to null?

Question

I have a JettyServerCustomizer that configs my embedded server, however there are certain configs that will be set by Spring after the customizer. Is there a way to override these after the configs. sessionIdManager is an example,

      JettyServerCustomizer jettyServerCustomizer =
          server -> {
            server.setSessionIdManager(null);
        .....

I want to set this to null, however by this time the manager actually hasn't been set yet so this doesn't work. update: If I assign a custom sessionIdmanager it will persist but if I nullify it will somehow get a default one. Anyway to change this behavior.