Create InventoryMapping using SRM API

I am using SRM 5.8, wanted to use new API feature to create folder, network mapping using powercli.

$web01 = New-WebServiceProxy("http://" + $srmServerAddr + ":9085/srm.wsdl") -Namespace SRM01

$srm01 = New-Object SRM01.Srmbinding

$srm01.url = "https://" + $srmServerAddr + ":9007"

$srm01.CookieContainer = New-Object System.Net.CookieContainer

$mof01 = New-Object SRM01.ManagedObjectReference

$mof01.type = "SrmServiceInstance"

$mof01.value = $mof01.type

$srmApi01 = ($srm01.RetrieveContent($mof01)).srmApi

$protection01 = ($srm01.RetrieveContent($mof01)).protection

$recovery01 = ($srm01.RetrieveContent($mof01)).recovery

$mapping = ($srm01.RetrieveContent($mof01)).InventoryMapping

PowerCLI C:\> $srm01.AddFolderMapping

OverloadDefinitions

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void AddFolderMapping(SRM01.ManagedObjectReference _this, SRM01.ManagedObjectReference primaryFolder, SRM01.ManagedObjectReference secondaryFolder)

I checked all the options to find primaryFolder MoRef but does not find any, can some point to how to map the folder using PowerCLI?

Regards,

Shyam Dhawale