ObjectSpace :: parentObject - Parent object space
When creating an object space hierarchy, each object space except the root object space has got a parent object space, in which the subordinated object space has been created.
Return value: Object space reference ( odaba::ObjectSpace & )
The reference refers to an opened or not opened object space handle.
Implementation details
odaba::ObjectSpace &
ObjectSpace  :: parentObject (  )
The function returns the parent object space for the object space.