public static IClientConfig getNamedConfig(String name, Class<? extends IClientConfig> clientConfigClass) {
        return getNamedConfig(name, factoryFromConfigType(clientConfigClass));
    }
Get the client configuration given the name or create one with clientConfigClass if it does not exist. An instance of IClientConfig
is created and {@link IClientConfig#loadProperties(String)} will be called.
ribbon-loadbalancer/src/main/java/com/netflix/client/ClientFactory.java