The function should return an estimate of uncompressed byte size of its arguments in memory.
E.g. for UInt32 argument it will return constant 4, for String argument - the string length + 9.
The function can take multiple arguments. The typical application is `byteSize(*)`.

**Use case**
Suppose you have a service that stores data for multiple clients in one table. Users will pay per data volume. So, you need to implement accounting of users data volume. The function will allow to calculate the data size on per-row basis.
constexpr bool isDateTime64() const { return idx == TypeIndex::DateTime64; }
    constexpr bool isDateOrDateTime() const { return isDate() || isDateTime() || isDateTime64(); }
    constexpr bool isString() const { return idx == TypeIndex::String; }
    constexpr bool isFixedString() const { return idx == TypeIndex::FixedString; }
    constexpr bool isStringOrFixedString() const { return isString() || isFixedString(); }
    constexpr bool isUUID() const { return idx == TypeIndex::UUID; }
    constexpr bool isArray() const { return idx == TypeIndex::Array; }
    constexpr bool isTuple() const { return idx == TypeIndex::Tuple; }
    constexpr bool isMap() const {return idx == TypeIndex::Map; }
    constexpr bool isSet() const { return idx == TypeIndex::Set; }
    constexpr bool isInterval() const { return idx == TypeIndex::Interval; }
    constexpr bool isNothing() const { return idx == TypeIndex::Nothing; }
    constexpr bool isNullable() const { return idx == TypeIndex::Nullable; }
    constexpr bool isFunction() const { return idx == TypeIndex::Function; }
    constexpr bool isAggregateFunction() const { return idx == TypeIndex::AggregateFunction; }
    constexpr bool isLowCardinality() const { return idx == TypeIndex::LowCardinality; }
    constexpr bool IsBigIntOrDeimal() const { return isInt128() || isInt256() || isUInt256() || isDecimal256(); }
};
template <typename T>
inline bool isDate(const T & data_type) { return WhichDataType(data_type).isDate(); }
template <typename T>
inline bool isDateOrDateTime(const T & data_type) { return WhichDataType(data_type).isDateOrDateTime(); }
template <typename T>
inline bool isDateTime(const T & data_type) { return WhichDataType(data_type).isDateTime(); }
template <typename T>
inline bool isDateTime64(const T & data_type) { return WhichDataType(data_type).isDateTime64(); }
inline bool isEnum(const DataTypePtr & data_type) { return WhichDataType(data_type).isEnum(); }
inline bool isDecimal(const DataTypePtr & data_type) { return WhichDataType(data_type).isDecimal(); }
inline bool isTuple(const DataTypePtr & data_type) { return WhichDataType(data_type).isTuple(); }
inline bool isArray(const DataTypePtr & data_type) { return WhichDataType(data_type).isArray(); }