'''isComponentType/6'''

 * 'NIL'|package_name
 * 'NIL'|'PUBLIC'|'PRIVATE'
 * (component type) identifier
 * component_category|'FEATURE GROUP'|'PORT GROUP'
 * 'NIL'|ancestor_type_reference
 * line number (integer)

notes:

 * package_name is mandatory for AADL v2 (warning message 001)
 * NIL is not a valid value for scope (warning message 002)
 * PORT GROUP is not valid for AADL v2 (warning message 003)