private boolean isToStringCallForCurrentBuilder(@Nullable PsiExpression expression) {
      if (expression == null) {
        return false;
      }
      PsiExpression downExpression = PsiUtil.skipParenthesizedExprDown(expression);
      if (!(downExpression instanceof PsiMethodCallExpression psiMethodCallExpression)) {
        return false;
      }
      return isToStringCall(psiMethodCallExpression) && isCallToStringBuilderMethod(psiMethodCallExpression);
    }
private boolean isToStringCallForCurrentBuilder(@Nullable PsiExpression expression)