public boolean deleteConfiguration(String id) {
    final List<ConfigurationDescriptor> list = getList();
    final Iterator<ConfigurationDescriptor> iterator = list.iterator();
    while (iterator.hasNext()) {
      final ConfigurationDescriptor descriptor = iterator.next();
      if (descriptor.getId().equals(id)) {
        iterator.remove();
        return true;
      }
    }
    return false;
  }
public boolean deleteConfiguration(String id)