static ContentUriTrigger getContentUriTrigger() {
    ObservedUri contactUri =
        new ObservedUri(ContactsContract.AUTHORITY_URI, Flags.FLAG_NOTIFY_FOR_DESCENDANTS);
    ObservedUri imageUri = new ObservedUri(Media.EXTERNAL_CONTENT_URI, 0);
    return Trigger.contentUriTrigger(Arrays.asList(contactUri, imageUri));
  }
Provides common utilities helpful for testing.
jobdispatcher/src/testLib/com/firebase/jobdispatcher/TestUtil.java