Update Center issue: How to hide/remove items from the Available Plugins tab

Neil C Smith wrote:
> I may have missed an earlier email that explained what you're trying to do, but is this any different to adding the following lines to the manifest of the relevant modules
> 
> AutoUpdate-Essential-Module: true
> AutoUpdate-Show-In-Client: false
> 
> ??
> 


This is an excerpt from my original post:

> I have a Netbeans 8.0.1 platform suite/application App1 that has its own update center. I have another platform application App2 with its own modules that uses App1 as a library, but some of the modules from App1 are disabled. App2 also has its own separate update center. 
> 
>  The problem is that when I goto Tools->Plugins in App2, under the "Available Plugins" tab, it shows the modules that I have disabled in App1 as available for install. This is undesirable, since one of the reasons I created App2 is because I do not want the users to have access to those disabled App1 modules.

Setting AutoUpdate-Show-In-Client: false  would prevent the module from showing in all applications, but it should only not be shown in certain applications, while it should be shown in others.