Inventory plugin creates unasked for parent group

[Klistel]

I'm working on testing the ntnx_prism_vm_inventory plugin, and I've written a very simple/straightforward use case for it that makes use of keyed_groups defined by ntnx_categories.

But for some reason, I get an additional group I wasn't expecting that seems to be the Nutanix Cluster name. Is it intended each host in a nutanix inventory be added to a parent group of the cluster name? Is there a way to exclude this group from being created by the plugin?