Artifacts map has changed to Map<String, Map<String, String>>

JSON payload new with "artifacts" map:

    {
        "name": "notification-plugin",
        "url": "job/notification-plugin/",
        "build": {
            "full_url": "http://localhost:8080/job/notification-plugin/81/",
            "number": 81,
            "phase": "FINALIZED",
            "status": "SUCCESS",
            "url": "job/notification-plugin/81/",
            "scm": {
                "url": "git@github.com:jenkinsci/notification-plugin.git",
                "branch": "origin/master",
                "commit": "4886d1ff4821879410f4f4a93168e6cc179a8eb3"
            },
            "artifacts": {
                "notification.hpi": {
                    "s3": "https://s3-eu-west-1.amazonaws.com/evgenyg-bakery-artifacts/jobs/notification-plugin/81/notification.hpi",
                    "archive": "http://localhost:8080/job/notification-plugin/81/artifact/target/notification.hpi"
                },
                "notification.jar": {
                    "archive": "http://localhost:8080/job/notification-plugin/81/artifact/target/notification.jar"
                }
            }
        }
    }