{
    "$schema": "https://json-schema.org/draft/next/schema",
    "$id": "http://localhost:1234/draft-next/metaschema-optional-vocabulary.json",
    "$vocabulary": {
        "https://json-schema.org/draft/next/vocab/validation": true,
        "https://json-schema.org/draft/next/vocab/core": true,
        "http://localhost:1234/draft/next/vocab/custom": false
    },
    "allOf": [
        { "$ref": "https://json-schema.org/draft/next/meta/validation" },
        { "$ref": "https://json-schema.org/draft/next/meta/core" }
    ]
}
