Since a CLF requires at least 1
processNode, what should be its contents when no transformation is desired, but where it makes sense for a CLF to be present anyway?
I think there would be value in defining a standard null CLF, perhaps by using an agreed-upon
ACEStransformID that indicates a non-op. This would be useful as a way to avoid doubt, especially in cases where CLFs are batch-generated as sidecars (e.g. per shot, dailies, VFX plates, etc.).