@Override
      public void visitReferenceExpression(@NotNull GrReferenceExpression ref) {
        super.visitReferenceExpression(ref);
        PsiElement resolveResult = getResolveElement(ref);
        checkRef(resolveResult, ref.getReferenceNameElement(), ref.getReferenceName());
      }
@Override
      public void visitReferenceExpression(@NotNull GrReferenceExpression ref)