Function capacity

util/generic/string.h:365–375

    }

    inline size_t capacity() const noexcept {
#ifdef TSTRING_IS_STD_STRING
        return Storage_.capacity();
#else
        if (S_->IsNull()) {
            return 0;
        }

        return S_->capacity();
#endif
    }

    TCharType* Detach() Y_LIFETIME_BOUND {
#ifdef TSTRING_IS_STD_STRING