There are some TAs from an older version of the app template for XenApp 5.x and below. These add-ons use PowerShell to invoke MFCOM since XenApp 5.x and below did not have PowerShell cmdlets. Here is a link to the old add-ons:
https://github.com/splunk/splunk-app-xenapp/tree/master/app/SplunkAppForXenApp/appserver/addons