/// <summary>
/// Constructs patchpaths in a PatchTree hierarchy so that no absolute paths
/// have to be saved within a PatchTree.
/// </summary>
public void CreatePatchPaths(string basePath)
{
var patchPath = Path.Combine(basePath, Id);
PatchPath = patchPath;
SubNodes.ForEach(x => x.CreatePatchPaths(basePath));
}