DIFF

enum EScriptInvokerInsertFlagsSource

NameValue
NONE
IMMEDIATE

It gets added in immediately, which means that when called while an invoker is running, it will call this newly added call in the same run

NoteDefault flag, as that is the original behaviour, although it might cause endless Insert chain now... (still better than undefined behaviour)
NoteIn case of "Possible endless Insert detected" VME, either create an exit, remove the IMMEDIATE flag or make the insert UNIQUE
NoteThe Endless Insert is detected by seeing if "amount of calls > initial size + 128"
UNIQUE

Only one call to this instance+method is ever expected

NoteWill throw a VME when a second one is attempted to be added
NoteIf it was already added without the flag, it will also throw a VME and keep the first of all previously inserted