@NotNull
  private PropertiesMap collectPropertiesToDelete(@NotNull File file) throws SvnBindException {
    final PropertiesMap result = new PropertiesMap();

    list(Target.on(file), null, Depth.EMPTY, new PropertyConsumer() {
      @Override
      public void handleProperty(File path, PropertyData property) {
        // null indicates property will be deleted
        result.put(property.getName(), null);
      }
    });

    return result;
  }
@NotNull
  private PropertiesMap collectPropertiesToDelete(@NotNull File file)