void setInstantiator(Instantiator instantiator) {
      synchronized (this) {
        this.instantiator = instantiator;
        notifyAll();
      }
    }
Sets the instantiator associated with this marker. It will notify any threads that are
waiting for the instantiator to be registered.
geode-core/src/main/java/org/apache/geode/internal/InternalInstantiator.java