I copied a default report "objects in OU", so i think it is generated by the following script
# Get parameter values
$objectTypes = $Context.GetParameterValue("param-ObjectTypes")
$scope = $Context.GetParameterValue("param-Scope")
$subtreeScope = $scope -eq "ADS_SCOPE_SUBTREE"
# Custom column identifiers
$ouColumnID = "{44db2afb-5559-4d2f-a1f7-e623e3a6c815}"
# Create a searcher for child objects
$childObjSearcher = New-Object Softerra.Adaxes.Adsi.Search.DirectorySearcher $NULL, $False
$childObjSearcher.SearchParameters.SearchScope = $scope
$childObjSearcher.SearchParameters.ReferralChasing = "ADS_CHASE_REFERRALS_NEVER"
$childObjSearcher.SearchParameters.Filter = "(|" + $objectTypes + ")"
$childObjSearcher.SearchParameters.PageSize = 500
$childObjSearcher.SetPropertiesToLoad($Context.DirectorySearcher.GetPropertiesToLoad())
# Add properties necessary to generate the report
$propertiesForOUs = @("objectClass", "objectGuid", "distinguishedName")
$Context.DirectorySearcher.SetPropertiesToLoad($propertiesForOUs)
# Search filter
$filter = "(objectCategory=organizationalUnit)"
$Context.DirectorySearcher.AppendFilter($filter)
# Generate report
try
{
    $searchIterator = $Context.DirectorySearcher.ExecuteSearch()
    while ($Context.MoveNext($searchIterator))
    {
        $searchResult = $searchIterator.Current
        $ouDN = $searchResult.GetPropertyByName("distinguishedName").Values[0]
        $columnValues = @{ $ouColumnID = $ouDN; }
        # Search for child objects
        $hasChildObjects = $False
        $childObjSearcher.SearchParameters.BaseObjectPath = $searchResult.AdsPath
        try
        {
            $childObjSearchIterator = $childObjSearcher.ExecuteSearch()
            while ($Context.MoveNext($childObjSearchIterator))
            {
                $childObjSearchResult = $childObjSearchIterator.Current
                if ($subtreeScope -and ($childObjSearchResult.AdsPath -eq $searchResult.AdsPath))
                {
                    # Subtree scope includes the base object. We don't need the object in the report.
                    continue
                }
                $hasChildObjects = $True
                # Add the object to the report
                $Context.Items.Add($childObjSearchResult, $columnValues, $NULL)
            }
        }
        finally
        {
            if ($childObjSearchIterator) { $childObjSearchIterator.Dispose() }
        }
        if ($hasChildObjects -eq $False)
        {
            # The OU is empty
            if ($styleNoChildObjects -eq $NULL)
            {
                $styleNoChildObjects = $Context.Items.CreateItemStyle("#3d3d3d", $NULL,
                    "ADM_LISTITEMFONTSTYLE_REGULAR")
            }
            $Context.Items.Add(-1, "<Keine Objekte>", "Information", $columnValues, $styleNoChildObjects)
        }
    }
}
finally
{
    if ($searchIterator) { $searchIterator.Dispose() }
}