code: func NewPartition(pool Pool, buffers ...Buffer) Buffer {
  	return &partition{
  		Pool: pool,
  		List: buffers,
  	}
  }
docs: // NewPartition returns a Buffer which uses a Pool to extend or shrink its size as needed.
  // It automatically allocates new buffers with pool.Get() to extend is length, and
  // pool.Put() to release unused buffers as it shrinks.