code: function sendRequest (args) {
    // { options, formData }
    const options = args.options
    const formData = args.formData
    return request(options.endpoint, formData).then(() => options)
  }
docs: Posts the form data to the endpoint.
  
  If the endpoint returns a status code other than 200, the promise is rejected.
  
  @param {{options: object, formData: object}}
  @returns {Promise<string>}