public static void putLogoutPostData(final RequestContext requestContext, final Map<String, Object> postData) {
        requestContext.getFlowScope().put("logoutPostData", postData);
    }
Put the logout POST data in the flow scope.

@param requestContext the flow context
@param postData       the POST data
core/cas-server-core-web-api/src/main/java/org/apereo/cas/web/support/WebUtils.java