2.2.4 CDomainRelativeObjId
The CDomainRelativeObjld type stores a FileID or FileLocation. When used as a FileLocation, CDomainRelativeObjld represents a previous or current location of the file within the domain. When used as a FileID, CDomainRelativeObjld represents the file's original FileLocation, as well as the unique identifier for the file.
This type is composed of a CVolumeId type (representing the VolumeID) and a CObjId type (the identifier of a file relative to volume indicated by the VolumeID).