code: protected final void assignCacheControlHeader(
  			final HttpServletRequest request,
  			final HttpServletResponse response, 
  			final Object handler) {
  		
  		final CacheControl cacheControl = this.getCacheControl(request, response, handler);
  		final String cacheControlHeader = this.createCacheControlHeader(cacheControl);
  		
  		if (cacheControlHeader != null) {
  			response.setHeader(HEADER_CACHE_CONTROL, cacheControlHeader);
  			if (useExpiresHeader) {
  				response.setDateHeader(HEADER_EXPIRES, createExpiresHeader(cacheControl));
  			}
  		}
  	}
docs: Assigns a <code>CacheControl</code> header to the given <code>response</code>.
  
  @param request the <code>HttpServletRequest</code>
  @param response the <code>HttpServletResponse</code>
  @param handler the handler for the given <code>request</code>