this.#.port.name .#.event.direction port.#.event.name  =
  (#x:formal-parameter) => {
    #x:out-ref-local  dzn_runtime.call_#.event.direction (this,
    () => {
      #x:trace-q-out
      #.port.name _#.event.name(#x:code-arguments);
    }, this.#.port.name , "#.event.name");
    #x:assign-out-ref };
