Sets a list of group names for the item with URI @uri. Each previously set group name list is removed.
If @uri cannot be found then an item for it is created.
an item's URI
an array of group names, or %NULL to remove all groups
2.12
See Implementation
Sets a list of group names for the item with URI @uri. Each previously set group name list is removed.
If @uri cannot be found then an item for it is created.