github.com/pulumi/terraform@v1.4.0/pkg/configs/testdata/valid-files/references.tf.json

{
  "//": "The purpose of this test file is to show that we can use template syntax unwrapping to provide complex expressions without generating the deprecation warnings we'd expect for native syntax.",
  "resource": {
    "null_resource": {
      "baz": {
        "//": "This particular use of template syntax is redundant, but we permit it because this is the documented way to use more complex expressions in JSON.",
        "triggers": "${ {} }"
      }
    }
  }
}