{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "CDM documentation hub export",
  "type": "object",
  "required": ["schema", "classes"],
  "properties": {
    "schema": {
      "type": "object",
      "required": ["id", "name"],
      "properties": {"id": {"type": "string"}, "name": {"type": "string"}, "api_snapshot_retrieved": {"type": ["string", "null"]}}
    },
    "classes": {
      "type": "object",
      "additionalProperties": {
        "type": "object",
        "required": ["title", "class_uri", "subset", "grid", "hub"],
        "properties": {
          "title": {"type": ["string", "null"]},
          "class_uri": {"type": ["string", "null"]},
          "subset": {"type": ["string", "null"]},
          "grid": {"type": ["string", "null"]},
          "hub": {
            "type": "object",
            "required": ["links", "terms", "product_docs_none", "api", "api_missing", "nexar", "nexar_missing", "api_from", "mappings"],
            "properties": {
              "links": {"type": "array", "items": {"type": "object", "required": ["text", "url", "primary"]}},
              "terms": {"type": "array", "items": {"type": "object", "required": ["text", "predicate", "contexts", "source"]}},
              "product_docs_none": {"type": "boolean"},
              "api": {"type": ["object", "null"], "required": ["type_name", "kind", "url"]},
              "api_missing": {"type": ["string", "null"]},
              "nexar": {"type": ["object", "null"], "required": ["type_name", "url"]},
              "nexar_missing": {"type": ["string", "null"]},
              "api_from": {"type": ["string", "null"], "description": "Ancestor class that declares the API type, when inherited"},
              "mappings": {"type": "array", "items": {"type": "object", "required": ["relation", "text", "url"]}}
            }
          }
        }
      }
    }
  }
}