src/test/resources/aggregate-features/dir3/test_y.json

{
  "id":"test:test:slingosgifeature:y:9.9.9",
  "bundles":[
    {
      "id":"org.apache.aries:org.apache.aries.util:1.1.3",
      "start-level":"20"
    }
  ],
  "extension1:JSON|false": [
  ],
  "extension2:ARTIFACTS|true": [
    "org.apache.sling:org.apache.sling.foobar:1.0.0"
  ],
  "extension4:TEXT|false:": "Hi there"
}