{
    "fields": {
        "name": {
            "type": "varchar",
            "required": true
        },
        "type": {
            "type": "varchar",
            "maxLength": 36
        },
        "size": {
            "type": "int",
            "min": 0
        },
        "parent": {
            "type": "linkParent"
        },
        "createdAt": {
            "type": "datetime",
            "readOnly": true
        },
        "createdBy": {
            "type": "link",
            "readOnly": true
        },
        "contents": {
            "type": "text",
            "notStorable": true
        },
        "role": {
            "type": "varchar",
            "maxLength": 36
        },
        "global": {
            "type": "bool",
            "default": false
        }
    },
    "links": {
        "createdBy": {
            "type": "belongsTo",
            "entity": "User"
        },
        "parent": {
            "type": "belongsToParent",
            "foreign": "attachments"
        }
    },
    "collection": {
        "sortBy": "createdAt",
        "asc": false
    },
    "indexes": {
        "parent": {
            "columns": ["parentType", "parentId"]
        }
    }
}