>>> $CLI bundle validate -o json -t use-default-variable-values
{
  "pipelines": {
    "my_pipeline": {
      "clusters": [
        {
          "label": "default",
          "num_workers": 42
        }
      ],
      "continuous": true,
      "deployment": {
        "kind": "BUNDLE",
        "metadata_file_path": "/Workspace/Users/tester@databricks.com/.bundle/foobar/use-default-variable-values/state/metadata.json"
      },
      "name": "a_string",
      "permissions": []
    }
  }
}

>>> $CLI bundle validate -o json -t override-string-variable
{
  "pipelines": {
    "my_pipeline": {
      "clusters": [
        {
          "label": "default",
          "num_workers": 42
        }
      ],
      "continuous": true,
      "deployment": {
        "kind": "BUNDLE",
        "metadata_file_path": "/Workspace/Users/tester@databricks.com/.bundle/foobar/override-string-variable/state/metadata.json"
      },
      "name": "overridden_string",
      "permissions": []
    }
  }
}

>>> $CLI bundle validate -o json -t override-int-variable
{
  "pipelines": {
    "my_pipeline": {
      "clusters": [
        {
          "label": "default",
          "num_workers": 43
        }
      ],
      "continuous": true,
      "deployment": {
        "kind": "BUNDLE",
        "metadata_file_path": "/Workspace/Users/tester@databricks.com/.bundle/foobar/override-int-variable/state/metadata.json"
      },
      "name": "a_string",
      "permissions": []
    }
  }
}

>>> $CLI bundle validate -o json -t override-both-bool-and-string-variables
{
  "pipelines": {
    "my_pipeline": {
      "clusters": [
        {
          "label": "default",
          "num_workers": 42
        }
      ],
      "continuous": false,
      "deployment": {
        "kind": "BUNDLE",
        "metadata_file_path": "/Workspace/Users/tester@databricks.com/.bundle/foobar/override-both-bool-and-string-variables/state/metadata.json"
      },
      "name": "overridden_string",
      "permissions": []
    }
  }
}