Function MutableBuffer

cpp/src/arrow/buffer.h:470–473

  }

  MutableBuffer(uint8_t* data, const int64_t size, std::shared_ptr<MemoryManager> mm)
      : Buffer(data, size, std::move(mm)) {
    is_mutable_ = true;
  }

  MutableBuffer(const std::shared_ptr<Buffer>& parent, const int64_t offset,
                const int64_t size);