@Nullable
  public static String getQualifiedName(@NotNull PsiElement element) {
    for (QualifiedNameProvider provider : QualifiedNameProvider.EP_NAME.getExtensionList()) {
      String qualifiedName = provider.getQualifiedName(element);
      if (qualifiedName != null) return qualifiedName;
    }
    return null;
  }
@Nullable
  public static String getQualifiedName(@NotNull PsiElement element)