{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$defs": {
"Value": {
"allOf": [
{ "$ref": "#/$defs/Value" },
{ "type": "string" }
]
}
},
"type": "object",
"properties": {
"value": { "$ref": "#/$defs/Value" }
},
"required": ["value"],
"additionalProperties": false,
"enum": [{ "value": "leaf" }]
}