This routine is called by the system when the object is created or when it is awakened from the dormant state so that it can initialize all of its instance variables to a known state. By default, memory allocated to instance variables is zerofilled. Note that this method is called before the object's state is known, so it is very important that the object does not try to process any other method while processing this method. Should an object need extra initialization that requires it to invoke other methods, this should be done from wpRestoreState.
When the object is first created, wpSetupOnce should be overridden to perform initialization that is required only once.
The parent method must be called before any processing is done by your overriding method.