final String comment = JsonParseUtil.getOptionalString(json, "comment");
final DateTime creationDate = JsonParseUtil.parseDateTime(json, "created");
final DateTime updateDate = JsonParseUtil.parseDateTime(json, "updated");
final DateTime startDate = JsonParseUtil.parseDateTime(json, "started");
final int minutesSpent = json.getInt("minutesSpent");
final Visibility visibility = new VisibilityJsonParser().parseVisibility(json);
return new Worklog(self, issueUri, author, updateAuthor, comment, creationDate, updateDate, startDate, minutesSpent, visibility);
}