public static void putSingleSignOnSessions(final RequestContext requestContext, final List<? extends Serializable> sessions) {
        requestContext.getFlowScope().put("singleSignOnSessions", sessions);
    }
Put single sign on sessions.

@param requestContext the request context
@param sessions       the sessions
core/cas-server-core-web-api/src/main/java/org/apereo/cas/web/support/WebUtils.java