@NotNull
  public static String getClasspathPrefix(@Nullable Element manifestConfiguration) {
    String classpathPrefix = MavenJDOMUtil.findChildValueByPath(manifestConfiguration, "classpathPrefix", "").replaceAll("\\\\", "/");
    if (classpathPrefix.length() != 0 && !classpathPrefix.endsWith("/")) {
      classpathPrefix += "/";
    }
    return classpathPrefix;
  }
@NotNull
  public static String getClasspathPrefix(@Nullable Element manifestConfiguration)