public SimpleTestUsernamePasswordAuthenticationHandler putAttributes(final Map<String, List<Object>> attributes) {
        this.userAttributes.putAll(attributes);
        return this;
    }
Map of special usernames to exceptions that are raised when a user with that name attempts authentication.
core/cas-server-core-authentication-api/src/test/java/org/apereo/cas/authentication/handler/support/SimpleTestUsernamePasswordAuthenticationHandler.java