@Override
  public boolean isVisible(@NotNull Usage usage, @NotNull UsageTarget @NotNull [] targets) {
    if (usage instanceof PsiElementUsage) {
      final PsiElement psiElement = ((PsiElementUsage)usage).getElement();
      final PsiFile containingFile = psiElement.getContainingFile();
      if (containingFile instanceof PyFile) {
        // check whether the element is in the import list
        final PyImportStatementBase importStatement = PsiTreeUtil.getParentOfType(psiElement, PyImportStatementBase.class, true);
        return importStatement == null;
      }
    }
    return true;
  }
@Override
  public boolean isVisible(@NotNull Usage usage, @NotNull UsageTarget @NotNull [] targets)