code: function(aftercopyEvent) {
      if (aftercopyEvent.errors && aftercopyEvent.errors.length > 0) {
        var errorEvent = _deepCopy(aftercopyEvent);
        _extend(errorEvent, {
          type: "error",
          name: "clipboard-error"
        });
        delete errorEvent.success;
        _setTimeout(function() {
          ZeroClipboard.emit(errorEvent);
        }, 0);
      }
    }
docs: Check an "aftercopy" event for clipboard errors and emit a corresponding "error" event.
  @private