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DataHub

Hi, I am trying to figure out a way to bulk export entities URNs from datahub. I stumbled on <https://datahubproject.io/docs/generated/ingestion/sources/datahub|this> source, which I think with a file sink would be able to help me export entities (datasources, tables and column names) from datahub instances. 

However I am unable to tell from the documentation what <https://datahubproject.io/docs/generated/ingestion/sources/datahub|this>  source will do, and any examples on how to use it. Since it is in testing, it's also not part of the latest release of datahub cli. If anyone can point me to a write-up of what the datahub source is supposed to do, that would be very helpful.

this source is more for migrating one datahub instance to another one afaik

I think currently you can either use the ui to export some data or use graphql api to query and dump data