web/src/main/java/org/springframework/security/web/servletapi/HttpServlet3RequestFactory.java
public void setLogoutHandlers(List<LogoutHandler> logoutHandlers) {
		this.logoutHandler = CollectionUtils.isEmpty(logoutHandlers) ? null : new CompositeLogoutHandler(logoutHandlers);
	}
public void setLogoutHandlers(List<LogoutHandler> logoutHandlers) {
		this.logoutHandler = CollectionUtils.isEmpty(logoutHandlers) ? null : new CompositeLogoutHandler(logoutHandlers);
	}
<p>
Sets the {@link LogoutHandler}s used when integrating with
{@link HttpServletRequest} with Servlet 3 APIs. Specifically it will be used when
{@link HttpServletRequest#logout()} is invoked in order to log the user out. So
long as the {@link LogoutHandler}s do not commit the {@link HttpServletResponse}
(expected), then the user is in charge of handling the response.
</p>
<p>
If the value is null (default), the default container behavior will be retained
when invoking {@link HttpServletRequest#logout()}.
</p>

@param logoutHandlers the {@link List<LogoutHandler>}s when invoking
{@link HttpServletRequest#logout()}.