alt_sandboxes.json

{
    "sandboxes": [
        {
            "Name": "msgtype_counter",
            "Outputs": [
                {
                    "Filename": "data/msgtype_counter.MessageTypeCounts.cbuf",
                    "Name": "Message Type Counts"
                },
                {
                    "Filename": "data/msgtype_counter..txt",
                    "Name": ""
                }
            ]
        }
    ]
}

msgtype_counter.json

{
    "Outputs": [
        {
            "Filename": "data/msgtype_counter.MessageTypeCounts.cbuf",
            "Name": "Message Type Counts"
        },
        {
            "Filename": "data/msgtype_counter..txt",
            "Name": ""
        }
    ]
}

sandboxes.json

{
    "sandboxes": [
        {
            "Name": "msgtype_counter",
            "metadata_path": "data/msgtype_counter.json"
        }
    ]
}