// Example user macro that accepts ctx (JSON string) and returns input unchanged.
// Demonstrates the expand(json, ctx) signature. Parsing ctx is optional.

static box MacroBoxSpec {
  static function name() { return "GensymExample" }

  static function expand(json, ctx) {
    // json: AST JSON v0 as string
    // ctx:  JSON string (MVP: {"caps":{"io":false,"net":false,"env":false}})
    // This example ignores ctx and returns json unchanged.
    return json
  }
}