'''isAnnex/7'''

 * 'NIL'|package_name
 * 'NIL'|component_type_identifier
 * 'NIL'|component_implementation_identifier
 * (annex) identifier
 * annex kind
 * annex_body
 * line number (integer)

notes:

 * package_name is mandatory for AADL v2 (warning message 001)
 * if component type is NIL, it defines an annex library
 * an additional parameter could be added to hold the package scope for annex libraries