Polishing

(cherry picked from commit 7ed7f98)

spring-web/src/main/java/org/springframework/web/bind/annotation/RequestBody.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -33,11 +33,11 @@ import org.springframework.http.converter.HttpMessageConverter;
  * <p>Supported for annotated handler methods in Servlet environments.
  *
  * @author Arjen Poutsma
+ * @since 3.0
  * @see RequestHeader
  * @see ResponseBody
  * @see org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter
  * @see org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter
- * @since 3.0
  */
 @Target(ElementType.PARAMETER)
 @Retention(RetentionPolicy.RUNTIME)
@@ -49,6 +49,7 @@ public @interface RequestBody {
 	 * <p>Default is {@code true}, leading to an exception thrown in case
 	 * there is no body content. Switch this to {@code false} if you prefer
 	 * {@code null} to be passed when the body content is {@code null}.
+	 * @since 3.2
 	 */
 	boolean required() default true;