public static final ApplyChangesInfo deleteNotes(Context context, Collection<RtmTaskNote> notes) {
    boolean ok = true;
    ContentProviderActionItemList actionItemList = new ContentProviderActionItemList();

    for (Iterator<RtmTaskNote> i = notes.iterator(); ok && i.hasNext(); ) {
      final String noteId = i.next().getId();
      final ModificationSet modifications = new ModificationSet();

      modifications.add(
          Modification.newNonPersistentModification(
              Queries.contentUriWithId(Notes.CONTENT_URI, noteId),
              Notes.NOTE_DELETED,
              System.currentTimeMillis()));
      modifications.add(Modification.newNoteModified(noteId));

      ok =
          actionItemList.add(
              ContentProviderAction.Type.DELETE,
              CreationsProviderPart.deleteCreation(
                  Queries.contentUriWithId(Notes.CONTENT_URI, noteId)));
      actionItemList.add(modifications);
    }

    if (!ok) actionItemList = null;

    return new ApplyChangesInfo(
        actionItemList,
        context.getString(R.string.toast_delete_note),
        context.getString(R.string.toast_delete_note_ok),
        context.getString(R.string.toast_delete_note_failed));
  }
  public static final ApplyChangesInfo insertNote(Context context, RtmTaskNote note) {
    ContentProviderActionItemList actionItemList = new ContentProviderActionItemList();

    boolean ok =
        actionItemList.add(
            ContentProviderAction.Type.INSERT, RtmNotesProviderPart.insertLocalCreatedNote(note));
    ok =
        ok
            && actionItemList.add(
                ContentProviderAction.Type.INSERT,
                CreationsProviderPart.newCreation(
                    Queries.contentUriWithId(Notes.CONTENT_URI, note.getId()),
                    note.getCreatedDate().getTime()));

    if (!ok) actionItemList = null;

    return new ApplyChangesInfo(
        actionItemList,
        context.getString(R.string.toast_insert_note),
        context.getString(R.string.toast_insert_note_ok),
        context.getString(R.string.toast_insert_note_fail));
  }