@Nullable
  static String getKotlinName(JvmClass cls) {
    KmDeclarationContainer container = getDeclarationContainer(cls);
    if (container instanceof KmPackage) {
      return cls.getPackageName();
    }
    if (container instanceof KmClass) {
      return ((KmClass)container).getName().replace('.', '/');
    }
    return null;
  }
@Nullable
  static String getKotlinName(JvmClass cls)