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Hello!
I am working (with <@U07CNGVPMSS> ) on adding the EMR service for a Terraform aws_emr_cluster.  In Terraform the aws_emr_instance_group seems like it should become a sub resource (or cost component) of the cluster.
Should the related group become a sub resource or should it remain a distinct resource with its own cost?  If it should be a sub resource, can someone point me to a best practice/example of that?
Thanks!

Hello! I've never worked with EMR myself, so I'm not aware of pricing details, sorry. But usually if a resource incurs costs, we make it a separate resource with its own cost components. Subresources are usually those that are declared as a block within the parent resource. An example could be `aws_instance` with `ebs_block_device` blocks.

In case it or the cluster resource need info from each other, it is possible to setup references. Here's an example: <https://github.com/infracost/infracost/blob/master/contributing/add_new_resource_guide.md#references-to-other-resources>