#831 - Polishing.

Applied some recommendations provided by IntelliJ that I stumbled over while reviewing the changes.

src/main/java/org/springframework/hateoas/server/core/UriTemplateFactory.java

@@ -38,7 +38,7 @@ public class UriTemplateFactory {
 	 * @param mapping must not be {@literal null} or empty.
 	 * @return
 	 */
-	public static UriTemplate templateFor(@Nullable String mapping) {
+	public static UriTemplate templateFor(String mapping) {
 
 		Assert.hasText(mapping, "Mapping must not be null or empty!");
 

src/main/java/org/springframework/hateoas/server/mvc/RepresentationModelProcessorInvoker.java

@@ -128,7 +128,7 @@ public class RepresentationModelProcessorInvoker {
 			}
 		}
 
-		return (T) invokeProcessorsFor(Object.class.cast(value), referenceType);
+		return (T) invokeProcessorsFor((Object) value, referenceType);
 	}
 
 	/**