emissary/internal/spec/gateway/testdata/spec-additional-prop.json

{
    "name": "gateway.emissary.cadoles.com",
    "data": {
      "gateways": {
        "cadoles.com": {
          "address": ":3003",
          "target": "https://www.cadoles.com",
          "foo": "bar"
        }
      }
    },
    "revision": 0
}