@Override
  @NotNull
  public List<? extends JpsLibraryPropertiesSerializer<?>> getLibraryPropertiesSerializers() {
    return Collections.singletonList(new JpsRepositoryLibraryPropertiesSerializer());
  }
@Override
  @NotNull
  public List<? extends JpsLibraryPropertiesSerializer<?>> getLibraryPropertiesSerializers()