src/ui/examples/meta/ui_example.cmx

{
    "program": {
        "binary": "bin/ui_example"
    },
    "sandbox": {
        "services": [
            "fuchsia.sys.Environment",
            "fuchsia.sys.Launcher",
            "fuchsia.tracing.provider.Registry",
            "fuchsia.ui.policy.Presenter",
            "fuchsia.ui.scenic.Scenic"
        ]
    }
}