web/src/main/java/org/springframework/security/web/authentication/rememberme/AbstractRememberMeServices.java
@Override
	public void logout(HttpServletRequest request, HttpServletResponse response,
			Authentication authentication) {
		if (logger.isDebugEnabled()) {
			logger.debug("Logout of user "
					+ (authentication == null ? "Unknown" : authentication.getName()));
		}
		cancelCookie(request, response);
	}
@Override
	public void logout(HttpServletRequest request, HttpServletResponse response,
			Authentication authentication) {
		if (logger.isDebugEnabled()) {
			logger.debug("Logout of user "
					+ (authentication == null ? "Unknown" : authentication.getName()));
		}
		cancelCookie(request, response);
	}
Implementation of {@code LogoutHandler}. Default behaviour is to call
{@code cancelCookie()}.