protected static void defaultSettings(Configuration.Builder builder) {
        // we require Postgres 9.4 as the minimum server version since that's where logical
        // replication was first introduced
        builder.with("assumeMinServerVersion", "9.4");
    }
Returns information about the PG server to which this instance is connected.

@return a {@link ServerInfo} instance, never {@code null}
@throws SQLException if anything fails
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/postgres-cdc/src/main/java/io/debezium/connector/postgresql/connection/PostgresConnection.java