@Override
  @Nls
  public String getLibraryVersion(final VirtualFile[] libraryFiles) {
    String version = GantUtils.getGantVersionOrNull(GantUtils.getGantLibraryHome(libraryFiles));
    return version == null ? GroovyBundle.message("undefined.library.version") : version;
  }
@Override
  @Nls
  public String getLibraryVersion(final VirtualFile[] libraryFiles)