Infra-LAB/projects/MDT/Control/ApplicationGroups.xml

<groups><group guid="{00000000-0000-0000-0000-000000000000}" enable="True"><Name>default</Name><Comments>default folder (root)</Comments></group><group guid="{FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF}" enable="True"><Name>hidden</Name><Comments>This folder contains shared source items that have not been made explicitly visible in this deployment share.</Comments></group></groups>