VAPI notes

var VAPIClient = VAPIEndpoint.client();

//var VMService = new com_vmware_vcenter_VM( VAPIClient );
var ContentLibraryItemService = new com_vmware_content_library_item( VAPIClient );
var ContentLibraryItemSpecification = new com_vmware_content_library_item_find__spec();

var ContentLibrarySubscriptionsService = new com_vmware_content_library_subscriptions( VAPIClient );
var SubscriptionSpecification = new com_vmware_content_library_item_destination__spec;
var ContentLibrarySubscriptions = ContentLibrarySubscriptionsService.list( ContentLibraryId );

var ContentLibraryTemplateService = new com_vmware_vcenter_vm__template_library__items_check__outs( VAPIClient );
var CheckOutSpecification = new com_vmware_vcenter_vm__template_library__items_check__outs_check__out__spec;
var CheckOutPlacementSpecification = new com_vmware_vcenter_vm__template_library__items_check__outs_placement__spec;
var CheckInSpecification = new com_vmware_vcenter_vm__template_library__items_check__outs_check__in__spec;

ContentLibraryItemSpecification.library_id = ContentLibraryId;

for each ( var ContentLibraryItemName in ContentLibraryItemsName )
{
    
    ContentLibraryItemSpecification.name = ContentLibraryItemName;
    var ContentLibraryItem = ContentLibraryItemService.find( ContentLibraryItemSpecification );
    
    for each ( var ContentLibraryItemId in ContentLibraryItem )
    {
        var ContentLibraryItemCheckOutName = ContentLibraryItemName.replace( /Release/g, 'Update' );

        CheckOutSpecification.name = ContentLibraryItemCheckOutName;
        CheckOutSpecification.powered_on = false;
        CheckOutPlacementSpecification.cluster = 'domain-c8';
        CheckOutPlacementSpecification.folder = 'group-v21041';
        CheckOutSpecification.placement = CheckOutPlacementSpecification;
        
        var CheckOut = ContentLibraryTemplateService.check_out( ContentLibraryItemId, CheckOutSpecification );
        CheckInSpecification.message = 'Aria Automation was here';
        ContentLibraryTemplateService.check_in( ContentLibraryItemId, CheckOut, CheckInSpecification ); 
        
        for each ( var ContentLibrarySubscription in ContentLibrarySubscriptions )
        {
            SubscriptionSpecification.subscription = ContentLibrarySubscription.subscribed_library
            ContentLibraryItemService.publish( ContentLibraryItemId, true, SubscriptionSpecification )
        }
    }
}