private void handleRemove(final String address) {
   final Uri uri =
       AddressBookProvider.contentUri(activity.getPackageName())
           .buildUpon()
           .appendPath(address)
           .build();
   activity.getContentResolver().delete(uri, null, null);
 }
 @Override
 public Loader<Cursor> onCreateLoader(final int id, final Bundle args) {
   final Uri uri = AddressBookProvider.contentUri(activity.getPackageName());
   return new CursorLoader(
       activity,
       uri,
       null,
       AddressBookProvider.SELECTION_NOTIN,
       new String[] {walletAddressesSelection != null ? walletAddressesSelection : ""},
       AddressBookProvider.KEY_LABEL + " COLLATE LOCALIZED ASC");
 }