@Override
    public Map<Object, Object> asMap() {
        if (isNullOrEmpty()) {
            return Collections.emptyMap();
        }

        Map<Object, Object> map = new LinkedHashMap<>();
        int index = 1;
        for (Object v : getValue()) {
            map.put(index++, v);
        }
        return map;
    }
Update value of the given object or create a new instance if {@code ref} is
null.

@param ref   object to update, could be null
@param value value
@return same object as {@code ref} or a new instance if it's null
clickhouse-data/src/main/java/com/clickhouse/data/value/ClickHouseTupleValue.java