private void setupJmxPort(EurekaInstanceConfigBean instance, Integer jmxPort) {
		Map<String, String> metadataMap = instance.getMetadataMap();
		if (metadataMap.get("jmx.port") == null && jmxPort != null) {
			metadataMap.put("jmx.port", String.valueOf(jmxPort));
		}
	}
@author Dave Syer
@author Spencer Gibb
@author Jon Schneider
@author Matt Jenkins
@author Ryan Baxter
@author Daniel Lavoie
@author Olga Maciaszek-Sharma
@author Tim Ysewyn
@author Robert Bleyl
spring-cloud-netflix-eureka-client/src/main/java/org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration.java