612b15abcc
Spring Security uses setter methods for optional member variables. Allows for a null cleanupCron to disable the cleanup. In a clustered environment it is likely that users do not want all nodes to be performing a cleanup because it will cause contention on the ott table. Another example is if a user wants to invoke cleanUpExpiredTokens with a different strategy all together, they might want to disable the cron job. Issue gh-15735