anchor.diff:  if not errorlevel 1 goto virtualbox
   echo "%PACKER_BUILDER_TYPE%" | findstr /i "parallels" >nul
   if not errorlevel 1 goto parallels
  +echo "%PACKER_BUILDER_TYPE%" | findstr /i "hyperv" >nul
  +if not errorlevel 1 goto hyperv
   echo ==^> ERROR: Unknown PACKER_BUILDER_TYPE: "%PACKER_BUILDER_TYPE%"
   pushd .
   goto exit1
  
positive.code: del /F "%PARALLELS_ISO_PATH"
  goto :exit0
  
  :exit0
  @ver>nul
  @goto :exit
  
negative.code: :: TODO: add steps to download hyperv Integration Tools .cab file based on OS and install them if the user hasn't specific their own URL
  @setlocal EnableDelayedExpansion EnableExtensions
  @for %%i in (a:\_packer_config*.cmd) do @call "%%~i"
  @if defined PACKER_DEBUG (@echo on) else (@echo off)
  