Fsccrawler Document ID

Hello,

Can anyone help me in this?
I wanted to check that, when we index any folder using FSCrawler, for each file in he folder separate document id is generated or for all the files or attachments in the folder only one document id is created at the time of indexing?

I have used FSCrawler to index attachments.

Regards,
Priyanka

There is one JSON document per file and folder and each JSON document has its own _id.