Low-level utility to save and load the data within a [VoxelBuffer](VoxelBuffer.md). This can be useful to send data over the network, or to store it in a file.
Note: this utility uses [StreamPeer](https://docs.godotengine.org/en/stable/classes/class_streampeer.html) as temporary support for the data, because Godot does not have a common interface between files and network streams. So typically, you should use a temporary [StreamPeerBuffer](https://docs.godotengine.org/en/stable/classes/class_streampeerbuffer.html) to put voxel data into, and then you can use its member StreamPeerBuffer.data_array to save the data in the actual place you want.
To store into a file:
```gdscript
# Note, buffer can be re-used if you do this often
var stream_peer_buffer = StreamPeerBuffer.new()
var written_size = serializer.serialize(stream_peer_buffer, voxels, true)
file.store_32(written_size)
file.store_buffer(stream_peer_buffer.data_array)
```
To read it back:
```gdscript
var size = file.get_32()
var stream_peer_buffer = StreamPeerBuffer.new()
# Unfortunately Godot will always allocate memory with this API, can't avoid that
Reads the data of a [VoxelBuffer](VoxelBuffer.md) from a [StreamPeer](https://docs.godotengine.org/en/stable/classes/class_streampeer.html). You must provide the number of bytes to read, and the destination buffer must have the expected size.
