MongoDB.Bson.IO.MultiChunkBuffer.WriteBytes C# (CSharp) Метод

        public void WriteBytes(IByteBuffer source)
        {
            ThrowIfDisposed();
            EnsureIsWritable();
            EnsureSpaceAvailable(source.Length);

            var savedPosition = source.Position;
            source.Position = 0;

            var chunkIndex = (_sliceOffset + _position) / _chunkSize;
            var chunkOffset = (_sliceOffset + _position) % _chunkSize;
            var remaining = source.Length;
            while (remaining > 0)
            {
                var chunkRemaining = _chunkSize - chunkOffset;
                var bytesToCopy = (remaining < chunkRemaining) ? remaining : chunkRemaining;
                source.ReadBytes(_chunks[chunkIndex].Bytes, chunkOffset, bytesToCopy);
                chunkIndex += 1;
                chunkOffset = 0;
                remaining -= bytesToCopy;
                _position += bytesToCopy;
            }
            if (_length < _position)
            {
                _length = _position;
            }

            source.Position = savedPosition;
        }