@Override
  public void visitVariable(@NotNull PsiVariable var) {
    super.visitVariable(var);
    final PsiExpression initializer = var.getInitializer();
    if (VariableAccessUtils.mayEvaluateToVariable(initializer, variable)) {
      assignedFrom = true;
      stopWalking();
    }
  }
@Override
  public void visitVariable(@NotNull PsiVariable var)