Building XSL Mapper with Azure Functions

extension-object.xml

<ExtensionObjects>
  <ExtensionObject
    Namespace="http://schemas.microsoft.com/BizTalk/2003/ScriptNS0"
    AssemblyName="Fully.Qualified.Assembly.Name, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d7e94ac1875c97e9"
    ClassName="Fully.Qualified.Class.Name" />
</ExtensionObjects>

request.json

{
  "inputXml": "<ESCAPED XML=\"STRING\" />",
  "mapper": {
    "directory": "[DIRECTORY NAME IN THE CONTAINER]",
    "name": "XSL_MAPPER_NAME.xsl"
  },
  "extensionObjects": [
    {
      "directory": "[DIRECTORY NAME IN THE CONTAINER]",
      "name": "LIBRARY.dll",
      "namespace": "http://schemas.microsoft.com/BizTalk/2003/ScriptNS0",
      "assemblyName": "Fully.Qualified.Assembly.Name, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d7e94ac1875c97e9",
      "className": "Fully.Qualified.Class.Name"
    }
  ]
}

transform.xsl

<?xml version="1.0" encoding="UTF-16"?>
<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:msxsl="urn:schemas-microsoft-com:xslt"
  xmlns:var="http://schemas.microsoft.com/BizTalk/2003/var"
  ...
  xmlns:userCSharp="http://schemas.microsoft.com/BizTalk/2003/userCSharp"
  xmlns:ScriptNS0="http://schemas.microsoft.com/BizTalk/2003/ScriptNS0"
>
  <xsl:variable name="var:v1" select="userCSharp:DoSomething1()" />
  ...
  <xsl:variable name="var:v2" select="ScriptNS0:DoSomething2()" />
  ...
  <msxsl:script language="C#" implements-prefix="userCSharp"><![CDATA[
  // Inline C# Code here
  ]]></msxsl:script>
</xsl:stylesheet>