v1.4.7/internal/terraform/testdata/refresh-data-module-var/main.tf - terraform - Git at Google

 resource "aws_instance" "A" {
   foo = "bar"
 }

 module "child" {
   source = "./child"
   key    = "${aws_instance.A.id}"
 }
	resource "aws_instance" "A" {
	foo = "bar"
	}

	module "child" {
	source = "./child"
	key = "${aws_instance.A.id}"
	}