@Bean
		@ConditionalOnMissingBean(HealthCheckHandler.class)
		public EurekaHealthCheckHandler eurekaHealthCheckHandler() {
			return new EurekaHealthCheckHandler(this.statusAggregator);
		}
@author Dave Syer
@author Spencer Gibb
@author Jon Schneider
@author Jakub Narloch
@author Olga Maciaszek-Sharma
@author Tim Ysewyn
spring-cloud-netflix-eureka-client/src/main/java/org/springframework/cloud/netflix/eureka/EurekaDiscoveryClientConfiguration.java