SendResetSeqNumFlag shows up in documentation but is not queried anywhere in the code

the configuration.html file contains an entry for the SendResetSeqNumFlag:
SendResetSeqNumFlag Send a sequence number reset when initiating a logon.

However, i'm not seeing any references to it in the QFJ code it self - the setting is now showing up in the Session.java nor is there a corresponding flag for it and it's not used in Session.isResetNeeded() function.

are the docs out of date? and what's the appropriate way to ensure that a reset (ie 141=Y) is not being sent in the first Logon message?