StartEventsWork.java

//firstly, we create a new piece of LiveData to pass the remote URL to the 
// Worker, and for that we define the REMOTE_URL String and initialize it
// by calling the getRemoteURL() method in our app
Data remoteUrl = new Data.Builder().putString(REMOTE_URL, getRemoteURL()).build();

//then, we create a new OneTimeWorkRequest since we don't need it to be 
//periodic, and set InputData to what we defined above, and add a work
//tag just in case we want to cancel this work
OneTimeWorkRequest getEventJson = new OneTimeWorkRequest
  .Builder(UpdateEventsWorker.class)
  .setInputData(remoteUrl)
  .addTag(EVENTS_JSON_WORK_TAG)
  .build();

//finally, we enqueue the work, letting WorkManager decide when it runs,
//but it is currently set up so it runs as soon as possible
WorkManager.getInstance().enqueue(getEventJson);