{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": true,
  "properties": {
    "_slug": {
      "description": "Entry identifier (URL slug / filename without extension)",
      "type": "string"
    },
    "items": {
      "description": "Calendar entries (references to calendar_item)",
      "items": {
        "description": "Reference (slug) to collection 'calendar_item'",
        "type": "string"
      },
      "type": "array"
    },
    "fromPost": {
      "default": false,
      "description": "Include entries from post",
      "type": "boolean"
    }
  },
  "required": ["_slug"],
  "type": "object"
}