WP_localmunki_psuedo.rb

 # Our managed installs and uninstalls:
 my_list_of_managed_installs = [
   'GoogleChrome',
   'Firefox',
 ]
 my_list_of_managed_uninstalls = [
   'MacKeeper',
 ]
 # Read the file from the Managed Installs manifests directory
 local = readInLocalManifestOnDisk('/Library/Managed Installs/manifests/extra_packages')
 # Assign our local managed installs
 local['managed_installs'] = my_list_of_managed_installs
 # Assign our local managed uninstalls
 local['managed_uninstalls'] = my_list_of_managed_uninstalls
 # Write back to disk
 writeLocalManifestToDisk(local, '/Library/Managed Installs/manifests/extra_packages')