'''isFlowSpecComment/6'''

 * 'NIL'|package_name
 * component_type_identifier
 * 'NIL'|component_implementation_identifier
 * (flow spec) identifier
 * comment
 * line number (integer)

notes:

 * package_name is mandatory for AADL v2 (warning message 001)
 * third parameter should always be 'NIL'