This is a basic client for uploading and downloading files to/from Microsoft OneDrive. You will need to perform OAuth authentication yourself - see MSDN documentation.
Files and folders in OneDrive are referenced by node id. If you want to reference them by path you will have to use the ResolvePath method. Then you can stat the node (NodeInfo) or list its children (NodeFiles).
Methods Upload and Download perform streming uploads and downloads to desired nodes.