What is createdUserRecordName record type metadata used for?

What is createdUserRecordName record type metadata used for?

I can't find any information on it. I see it in CloudKit dashboard for every record type.

createdUserRecordName captures the user record for the user who has created the record. For instance, in CloudKit Console you can use this metadata to find all the records created by a user. You may find the documentation for this field in native CloudKit SDK here.

What is createdUserRecordName record type metadata used for?
 
 
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