public static boolean isCasLoginFormViewable(final RequestContext context) {
        return context.getFlowScope().getBoolean("casLoginFormViewable", Boolean.TRUE);
    }
Is cas login form viewable.

@param context the context
@return true /false Defaults to TRUE if not set in flow scope
core/cas-server-core-web-api/src/main/java/org/apereo/cas/web/support/WebUtils.java