@Bean
		public InMemoryUserDetailsManager userDetailsService() {
			UserDetails user = User.withDefaultPasswordEncoder()
				.username("test")
				.password("test")
				.roles("USER")
				.build();
			return new InMemoryUserDetailsManager(user);
		}
Simulates Eureka Server own's serialization.
@return converter
spring-cloud-netflix-eureka-client/src/test/java/org/springframework/cloud/netflix/eureka/http/EurekaServerMockApplication.java