DATAREST-1324 - Fixed return type of ConfigurableHttpMethods.enable(…).

We now also return ConfigurableHttpMethods from its ….enable(…) method to make sure it can be chained properly.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/ConfigurableHttpMethods.java

@@ -95,7 +95,7 @@ public class ConfigurableHttpMethods implements HttpMethods {
 	 * @param methods must not be {@literal null}.
 	 * @return
 	 */
-	public HttpMethods enable(HttpMethod... methods) {
+	public ConfigurableHttpMethods enable(HttpMethod... methods) {
 
 		Assert.notNull(methods, "HttpMethods must not be null!");