When you request RESULT_TYPE_VISIT from query options, you will get this interface for each item, which includes the session ID so that we can group items from the same session together.
[scriptable, uuid(8e2c5a86-b33d-4fa6-944b-559af7e95fcd)]
Attributes
This indicates the session ID of the * visit. This is used for session grouping when a tree view is sorted by date.
readonly attribute
long long
sessionId