boolean isAdditive) throws IOException, ObservationReadError {
this.getProgressNotifier().notifyListeners(ProgressInfo.START_PROGRESS);
this.getProgressNotifier().notifyListeners(ProgressInfo.BUSY_PROGRESS);
NewStarFromObSourcePluginWithSuppliedURLTask task = new NewStarFromObSourcePluginWithSuppliedURLTask(
obSourcePlugin, url, isAdditive);
this.currTask = task;
task.execute();
}