code: public GlobalStateConfigurationBuilder configurationStorageSupplier(Supplier<? extends LocalConfigurationStorage> configurationStorageSupplier) {
        configurationStorage(ConfigurationStorage.CUSTOM);
        attributes.attribute(CONFIGURATION_STORAGE_SUPPLIER).set(configurationStorageSupplier);
        return this;
     }
docs: Defines the @{@link LocalConfigurationStorage}. Defaults to @{@link org.infinispan.globalstate.impl.VolatileLocalConfigurationStorage}