@Override
    public void deleteAll() {
        cassandraSessionFactory.getCassandraTemplate().truncate(CassandraRegisteredServiceHolder.class);
    }
This is {@link CassandraServiceRegistry}.

@author Misagh Moayyed
@since 6.1.0
support/cas-server-support-cassandra-service-registry/src/main/java/org/apereo/cas/services/cassandra/CassandraServiceRegistry.java