#160 - Fixed UriTemplate.expand(…) method declaration.

UriTemplate.expand(Map) not takes a Map<String, ? extends Object> to make sure Link.expand(Map) binds to the correct method. Previously it was bound to the method overload taking an Object vararg which caused an invalid expansion.

src/main/java/org/springframework/hateoas/UriTemplate.java

@@ -179,7 +179,7 @@ public class UriTemplate implements Iterable<TemplateVariable> {
 	 * @param parameters must not be {@literal null}.
 	 * @return
 	 */
-	public URI expand(Map<String, Object> parameters) {
+	public URI expand(Map<String, ? extends Object> parameters) {
 
 		if (TemplateVariables.NONE.equals(variables)) {
 			return URI.create(baseUri);