Fixes for r95260:

Fixes for r95260:
* Use protected instead of var
* Move documentation of closeRenameAndReopen() to parent class. Add a TODO for the other undocumented methods introduced in r95260
* Use the correct method name in the exceptions by using __METHOD__; messages were copypasted from one method to the other without changing anything. Also fix a typo ("argumnts")
* Minor coding style bit, will commit more style fixes in a minute