private static void addLocalManagementPortPropertyAlias(ConfigurableEnvironment environment, Integer port) {
        environment.getPropertySources().addLast(new PropertySource<Object>("Management Server") {
            @Nullable
            @Override
            public Object getProperty(String name) {
                if ("local.management.port".equals(name)) {
                    return port;
                }
                return null;
            }
        });
    }
Returns a {@link HttpCodeStatusMapper}.
See <a href="https://github.com/spring-projects/spring-boot/blob/9643dbeed26268f37d37c22385704de8911b8f21/spring-boot-project/spring-boot-docs/src/docs/asciidoc/actuator/endpoints.adoc#writing-custom-healthindicators">writing-custom-healthindicators</a>.
spring/boot3-actuator-autoconfigure/src/main/java/com/linecorp/armeria/spring/actuate/ArmeriaSpringActuatorAutoConfiguration.java