@Override
  public void visitImportStatement(@NotNull PsiImportStatement statement) {
    if (!hasErrorResults()) {
      add(HighlightUtil.checkSingleImportClassConflict(statement, mySingleImportedClasses, myFile));
    }
    if (!hasErrorResults()) {
      PreviewFeatureUtil.checkPreviewFeature(statement, myPreviewFeatureVisitor);
    }
  }
@Override
  public void visitImportStatement(@NotNull PsiImportStatement statement)