@Override
    public ClickHouseNestedValue update(Object value) {
        if (value instanceof Object[][]) {
            set((Object[][]) value);
        } else {
            super.update(value);
        }
        return this;
    }
Gets immutable list of nested columns.

@return immutable list of columns
clickhouse-data/src/main/java/com/clickhouse/data/value/ClickHouseNestedValue.java