<?xml version="1.0" encoding="utf-8" ?>
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">

  <!-- If system.codedom tag is absent -->
  <system.codedom xdt:Transform="InsertIfMissing">
  </system.codedom>

  <!-- If compilers tag is absent -->
  <system.codedom>
    <compilers xdt:Transform="InsertIfMissing" />
  </system.codedom>

  <!-- If a .cs compiler is already present, the existing entry needs to be removed before inserting the new entry -->
  <system.codedom>
    <compilers>
      <compiler
        extension=".cs"
        xdt:Transform="Remove"
        xdt:Locator="Match(extension)" />
    </compilers>
  </system.codedom>

  <!-- If a .vb compiler is already present, the existing entry needs to be removed before inserting the new entry -->
  <system.codedom>
    <compilers>
      <compiler
        extension=".vb"
        xdt:Transform="Remove"
        xdt:Locator="Match(extension)" />
    </compilers>
  </system.codedom>

</configuration>