public static Collection getOneTimeTokenAccounts(final RequestContext requestContext) {
        return requestContext.getFlowScope().get("registeredDevices", Collection.class);
    }
Gets one time token accounts.

@param requestContext the request context
@return the one time token accounts
core/cas-server-core-webflow-mfa-api/src/main/java/org/apereo/cas/web/flow/util/MultifactorAuthenticationWebflowUtils.java