@Bean
    @ConditionalOnMissingBean(name = "firebaseCloudMessagingNotificationSenderExecutionPlanConfigurer")
    @RefreshScope(proxyMode = ScopedProxyMode.DEFAULT)
    public NotificationSenderExecutionPlanConfigurer firebaseCloudMessagingNotificationSenderExecutionPlanConfigurer(
        @Qualifier("firebaseCloudMessagingNotificationSender")
        final NotificationSender firebaseCloudMessagingNotificationSender) {
        return () -> firebaseCloudMessagingNotificationSender;
    }
This is {@link CasGoogleFirebaseCloudMessagingAutoConfiguration}.

@author Misagh Moayyed
@since 6.3.0
support/cas-server-support-notifications-fcm/src/main/java/org/apereo/cas/config/CasGoogleFirebaseCloudMessagingAutoConfiguration.java