I understand that FetchS3Object processor requires an incoming FlowFile to 
trigger it. The problem is that FetchS3Object emits a RECEIVE provenance event 
for the existing FlowFile. That event causes following error when I try to open 
the lineage chart for a simple flow: GenerateFlowFile -> FetchS3Object.

"Found cycle in graph. This indicates that multiple events were registered 
claiming to have generated the same FlowFile (UUID = 
40f58407-ea10-4843-b8d1-be0e24f685aa)"

Should FetchS3Object create a new FlowFile for each fetched object? If so, does 
it really require an incoming FlowFile?

Regards,
Ben
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