private void chooseRevision() {
    if (myProject != null && myUrlProvider != null) {
      try {
        SvnRepositoryLocation location = new SvnRepositoryLocation(myUrlProvider.compute());
        SvnChangeList version = SvnSelectRevisionUtil.chooseCommittedChangeList(myProject, location, myRoot);
        if (version != null) {
          myRevisionField.setText(String.valueOf(version.getNumber()));
        }
      }
      catch (SvnBindException e) {
        showErrorDialog(myProject, e.getMessage(), message("error.cannot.load.revisions"));
      }
    }
  }
private void chooseRevision()