MongoDB.Bson.IO.MultiChunkBuffer.MakeReadOnly C# (CSharp) Method

        public void MakeReadOnly()
        {
            ThrowIfDisposed();
            _isReadOnly = true;
        }

        /// <summary>
        /// Writes a raw BSON array.
        /// </summary>
        /// <param name="slice">The byte buffer containing the raw BSON array.</param>
        public virtual void WriteRawBsonArray(IByteBuffer slice)
        {
            // overridden in BsonBinaryWriter to write the raw bytes to the stream
            // for all other streams, deserialize the raw bytes and serialize the resulting array instead

            using (var chunkSource = new InputBufferChunkSource(BsonChunkPool.Default))
                using (var buffer = new MultiChunkBuffer(chunkSource))
                    using (var stream = new ByteBufferStream(buffer))
                    {
                        // wrap the array in a fake document so we can deserialize it
                        var documentLength = slice.Length + 8;
                        buffer.EnsureCapacity(documentLength);
                        stream.WriteInt32(documentLength);
                        stream.WriteBsonType(BsonType.Array);
                        stream.WriteByte((byte)'x');
                        stream.WriteByte(0);
                        stream.WriteSlice(slice);
                        stream.WriteByte(0);
                        buffer.MakeReadOnly();

                        stream.Position = 0;
                        using (var reader = new BsonBinaryReader(stream, BsonBinaryReaderSettings.Defaults))
                        {
                            var deserializationContext = BsonDeserializationContext.CreateRoot(reader);
                            reader.ReadStartDocument();
                            reader.ReadName("x");
                            var array = BsonArraySerializer.Instance.Deserialize(deserializationContext);
                            reader.ReadEndDocument();

                            var serializationContext = BsonSerializationContext.CreateRoot(this);
                            BsonArraySerializer.Instance.Serialize(serializationContext, array);
                        }
                    }
        }