action bbci_get_categories {
  label: "Get categories"
  description: "Get the list of all the categories in TV & iPlayer."
  provider: bbci
  method: GET
  path: "/categories"
  encoding: json
  input: {
    type: "object"
    properties: {
      lang: {
        type: "string"
        enum: ["en", "cy", "ga", "gd", "pi"]
      }
    }
    required: ["lang"]
    additionalProperties: false
  }
  output: {
    type: "object"
  }
}