@VisibleForTesting
    boolean isManagementPortEqualsToServerPort() {
        final Integer managementPort = environment.getProperty("management.server.port", Integer.class);
        if (managementPort == null) {
            // The management port is disable
            return true;
        }
        final Integer ensuredManagementPort = ensureValidPort(managementPort);
        final Integer serverPort = environment.getProperty("server.port", Integer.class);
        return (serverPort == null && ensuredManagementPort.equals(8080)) ||
               (ensuredManagementPort != 0 && ensuredManagementPort.equals(serverPort));
    }
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