Delegates directly to the wrapper property source, because it will use
a command to perform the modification (which implicitly creates a
read/write transaction).
Overrides the superclass method to
ignore the "originalTargetObjects" since we never resume recording
a paused change description
ignore the "targetObjects" because we will never find, upon
upon consolidating changes, that any target object is unexpectedly
orphaned (as we always listen to everything in the resource set,
so will always get the appropriate removal notifications).