How to add context menu item to the activity designer context menu

Hi,

I need to add my custom context menu item to the activity designer context menu.

I've found out that Visual Studio menu items can be extended through Visual Studio Package project.

The Visual Studio menu items can be added via configuring '.vsct' file.

So, I need to get information about Visual Studio context item Id.

For example context menu item for code file is:

<Parent guid="guidSHLMainMenu" id="IDM_VS_CTXT_CODEWIN"/>

I tried to find id for activity designer context menu but i did not find.

There is article related with this question:

http://msdn.microsoft.com/en-us/library/cc826118.aspx

http://msdn.microsoft.com/en-us/library/bb166366.aspx

Question:

How to add custom context menu item to the activity designer context menu.

Thanks,