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Changes between Initial Version and Version 1 of Ticket #18458, comment 2

initial	v1
1	1	I recently worked on this code and came to the conclusion that `get_expiry_age` and `get_expiry_date` are designed to work at the time when the session is saved, and not at any other point in time.
2	2
3		`get_expiry_age` i- used to determine the session cookie's maximum age. That probably explains the name. Since it's a public API, it's better to keep the current name, even if it isn't great.
	3	`get_expiry_age` is used to determine the session cookie's maximum age. That probably explains the name. Since it's a public API, it's better to keep the current name, even if it isn't great.
4	4
5	5	In order to fix #18194, I may have to introduced an optional parameter to pass the "reference time" (ie. the time the session was saved at); if not provided, this parameter would default to the current time. That would resolve this issue.