Quick summary
Trigger whatever the ps3 does to inform the currently running disc game that the disc has been ejected if the file path for it becomes inaccessible.
Details
I noticed this while messing around with an already decrypted disc dump burned onto a blank dvd-r, ejecting the disc while the game is running will immediately crash the game with "Verification failed"(see attached log):
RPCS3.log
I believe that this feature is necessary for accuracy, future disc image support or even booting off original discs someday.
This feature would avoid a crash if an external drive the game dump is on or a network drive is having connection issues or like in my case as described above.
I also noticed that the "Eject Disc" option under "Emulation" is greyed out, I am assuming that this is only implemented for PSOne Classics at this time?