private MeterIdPrefixFunction meterIdPrefixFunctionOrDefault() {
        final MeterIdPrefixFunction f = findBean(MeterIdPrefixFunction.class);
        return f != null ? f : MeterIdPrefixFunction.ofDefault("armeria.server");
    }
Creates a new factory instance with the specified {@link ConfigurableListableBeanFactory}.
spring/boot3-webflux-autoconfigure/src/main/java/com/linecorp/armeria/spring/web/reactive/ArmeriaReactiveWebServerFactory.java