-import org.asamk.signal.manager.NotAGroupMemberException;
-import org.asamk.signal.util.GroupIdFormatException;
+import org.asamk.signal.manager.groups.GroupId;
+import org.asamk.signal.manager.groups.GroupIdFormatException;
+import org.asamk.signal.manager.groups.GroupNotFoundException;
+import org.asamk.signal.manager.groups.NotAGroupMemberException;