public static List<String> getSurrogateAuthenticationAccounts(final RequestContext requestContext) {
        return requestContext.getFlowScope().get("surrogates", List.class);
    }
Gets surrogate authentication accounts.

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