Method Seek

libs/coding/writer.hpp:118–125

  }

  void Seek(uint64_t pos) override
  {
    ASSERT_EQUAL(m_offset, GetOffset(), ());
    m_writer.Seek(GetOffset() + pos);

    m_pos = pos;
    m_maxPos = std::max(m_maxPos, m_pos);
  }

  uint64_t Pos() const override
  {