Structure of USE_CASE versionable object

USE_CASE

 -EXTENSION_POINTS                                 (via USE_CASE_REFERENCE)
 -EVENT_ACTIONS                                    (via USE_CASE_REFERENCE)
 -GENERAL_ACTIONS                                  (via USE_CASE_REFERENCE)
 -INCLUSION_ACTIONS                                (via USE_CASE_REFERENCE)
 -USE_CASE_ACTOR_USAGES                            (via USE_CASE_REFERENCE)
 -USE_CASE_OBJECTIVES                              (via USE_CASE_REFERENCE)
 -USE_CASE_EXTENSIONS                              (via USE_CASE_REFERENCE)
 -USE_CASE_EVENT_INPUTS                            (via USE_CASE_REFERENCE)
 -USE_CASE_EVENT_OUTPUTS                           (via USE_CASE_REFERENCE)
 -USE_CASE_GENERALIZATIONS                         (via SUBTYPE_REFERENCE)

Also included in this versionable object are:

- Any user defined EXTENDED_STRUCTURE_ELEMENTS owned by the above

- Any TAGGED_VALUES and/or ELEMENT_RULE_USAGES for the above