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