Gets the IProcessingUnitInstance that holds the backup ISpaceInstance,
or null if this processing unit has no embedded space.

C# | Visual Basic | Visual C++ | J# |
IProcessingUnitInstance Backup { get; }
ReadOnly Property Backup As IProcessingUnitInstance
property IProcessingUnitInstance^ Backup { IProcessingUnitInstance^ get (); }
/** @property */ IProcessingUnitInstance get_Backup()