public void snapshot(long snapshotVersion) throws ClickHouseException {
        snapshot(snapshotVersion, Collections.emptyMap());
    }
Sets transaction snapshot with optional server settings. Same as
{@code snapshot(snapshotVersion, Collections.emptyMap())}.

@param snapshotVersion snapshot version
@throws ClickHouseException when failed to set transaction snapshot
clickhouse-client/src/main/java/com/clickhouse/client/ClickHouseTransaction.java