public static boolean ignoreLambdaConstraintTree(PsiExpression arg) {
    for (PsiElement expr : MethodCandidateInfo.ourOverloadGuard.currentStack()) {
      if (PsiTreeUtil.getParentOfType(expr, PsiFunctionalExpression.class, false) == arg) {
        return true;
      }
    }
    return false;
  }
public static boolean ignoreLambdaConstraintTree(PsiExpression arg)