This is a collection of TrkItemTypeGroupAttribs metadata objects.
TrkItemTypeGroupAttrib objects are loaded from the database into this collection when the TADBRoot.Load method is called.
Each attribute has a unique name within a group, so the globally unique attribute name is identified by a group name separated from the the attribute name by a "." (dot)
Currently not implemeted and is intended for future use only.
|Methods:||Count , Item|