@Bean
FlywayConfigurationCustomizer flywayConfigurationCustomizer() {
    return configuration -> {
        Long timestamp = mirrorProperties.getTopicRunningHashV2AddedTimestamp();
        if (timestamp == null) {
            if (mirrorProperties.getNetwork() == HederaNetwork.MAINNET) {
                timestamp = 1592499600000000000L;
            } else {
                timestamp = 1588706343553042000L;
            }
        }
        configuration.getPlaceholders().put("topicRunningHashV2AddedTimestamp", timestamp.toString());
    };
}