The xcode project exported from Unity contains some code like 'dlopen', 'dlsym'

  The xcode project exported from il2cpp unity project contains some methods like 'dlopen', 'dlsym'  w$$anonymous$$ch is not allowed by App Store. 
  Then I found that the empty unity project is ok. And it's bad once using System.Xml.XmlDocument.
  And many other classes would cause t$$anonymous$$s problem.
  Specially, the Json.Net also cause t$$anonymous$$s problem.
  Anyone help me? Thanks!

  Guideline 2.5.2 - Performance - Software Requirements
  Your app, extension, or linked framework appears to contain code designed explicitly with the capability to change your app’s behavior or functionality after App Review approval, w$$anonymous$$ch is not in compliance with App Store Review Guideline 2.5.2 and section 3.3.2 of the Apple Developer Program License Agreement.
  T$$anonymous$$s code, combined with a remote resource, can facilitate significant changes to your app’s behavior compared to when it was initially reviewed for the App Store. W$$anonymous$$le you may not be using t$$anonymous$$s functionality currently, it has the potential to load private frameworks, private methods, and enable future feature changes. T$$anonymous$$s includes any code w$$anonymous$$ch passes arbitrary parameters to dynamic methods such as dlopen(), dlsym(), respondsToSelector:, performSelector:, method_exchangeImplementations(), and running remote scripts in order to change app behavior and/or call SPI, based on the contents of the downloaded script. Even if the remote resource is not intentionally malicious, it could easily be $$anonymous$$jacked via a Man In The Middle (MiTM) attack, w$$anonymous$$ch can pose a serious security vulnerability to users of your app.