indexing description: "Objects that hold one or more children." author: "" date: "$Date$" revision: "$Revision$" deferred class GB_PARENT_OBJECT inherit GB_OBJECT feature {GB_OBJECT_HANDLER, GB_OBJECT, GB_TYPE_SELECTOR_ITEM} -- Basic operation add_child_object (an_object: GB_OBJECT; position: INTEGER) is -- Add `an_object' to `Current' at position `position'. require correct_type: accepts_child (an_object.type) deferred end end -- class GB_CONTAINABLE_OBJECT