anchor.diff:  
   * Request or response objects (Servlet API). Choose any specific request or response
     type, for example `ServletRequest` or `HttpServletRequest`.
  -* Session object (Servlet API): of type `HttpSession`. An argument of this type enforces
  +* Session object (Servlet API) of type `HttpSession`. An argument of this type enforces
     the presence of a corresponding session. As a consequence, such an argument is never
     `null`.
   
  
positive.code: ----
  	@RequestMapping("/something")
  	public ResponseEntity<String> handle(HttpEntity<byte[]> requestEntity) throws UnsupportedEncodingException {
  		String requestHeader = requestEntity.getHeaders().getFirst("MyRequestHeader"));
  		byte[] requestBody = requestEntity.getBody();
  
  		// do something with request header and body
  
negative.code: 				<ref bean="stringHttpMessageConverter"/>
  				<ref bean="marshallingHttpMessageConverter"/>
  			</util:list>
  		</property>
  	</bean>
  
  	<bean id="stringHttpMessageConverter"
  