{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "properties": {
        "schema": {
            "enum": [
                "1.0"
            ]
        },
        "id": {
            "description": "UUID4 represented as string with or without {}",
            "type": "string",
            "pattern": "^(#{{0,1}([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}}{0,1})$"
        },
        "name": {
            "type": "string",
            "minLength": 1
        },
        "description": {
            "type": "string"
        },
        "created": {
            "type": "string",
            "format": "date-time"
        },
        "modified": {
            "type": "string",
            "format": "date-time"
        },
        "items": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "path": {
                        "type": "string",
                        "pattern": ".*\\.(u3m|u3ma|json)$"
                    },
                    "id": {
                        "description": "UUID4 represented as string with or without {}",
                        "type": "string",
                        "pattern": "^(#{{0,1}([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}}{0,1})$"
                    }
                },
                "additionalProperties": false,
                "required": [
                    "path",
                    "id"
                ]
            }
        },
        "custom": {
            "type": [
                "object",
                "null"
            ]
        }
    },
    "additionalProperties": false,
    "required": [
        "schema",
        "id",
        "name",
        "created",
        "modified",
        "items",
        "custom"
    ]
}