code: func (c *MTurk) NotifyWorkers(input *NotifyWorkersInput) (*NotifyWorkersOutput, error) {
  	req, out := c.NotifyWorkersRequest(input)
  	return out, req.Send()
  }
docs: // NotifyWorkers API operation for Amazon Mechanical Turk.
  //
  // The NotifyWorkers operation sends an email to one or more Workers that you
  // specify with the Worker ID. You can specify up to 100 Worker IDs to send
  // the same message with a single call to the NotifyWorkers operation. The NotifyWorkers
  // operation will send a notification email to a Worker only if you have previously
  // approved or rejected work from the Worker.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for Amazon Mechanical Turk's
  // API operation NotifyWorkers for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeServiceFault "ServiceFault"
  //   Amazon Mechanical Turk is temporarily unable to process your request. Try
  //   your call again.
  //
  //   * ErrCodeRequestError "RequestError"
  //   Your request is invalid.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/mturk-requester-2017-01-17/NotifyWorkers