s3transfer/processpool.py (3 lines):
	- line 593: # TODO: Add logic that removes the TransferState if the transfer is
	- line 643: # TODO: Not all exceptions are pickleable so if we are running
	- line 898: # TODO: It may make sense to expose these class variables as configuration


s3transfer/__init__.py (1 line):
	- line 845: # TODO: we need a way to reset the callback if the