{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "Common schema definitions for places theme",
  "$defs": {
    "typeDefinitions": {
      "category": {
        "description": "Category of a place.",
        "type": "string",
        "minLength": 1,
        "pattern": "^[a-z0-9]+(_[a-z0-9]+)*$"
      }
    }
  }
}