/// Type of the underlying string value.

using ValueType = std::shared_ptr<std::string>;

static std::shared_ptr<BString> create(std::string value);

static std::shared_ptr<BString> create(ValueType value);

ValueType value() const;

void setValue(ValueType value);

void setValue(std::string value);

int64_t length() const;

/// @name BItemVisitor Support

/// @{

virtual void accept(BItemVisitor *visitor) override;

/// @}

explicit BString(ValueType value);

explicit BString(std::string value);

ValueType _value;