'''isBAVariable/9'''

 * 'NIL'|package_name
 * component_type_identifier
 * 'NIL'|component_implementation_identifier
 * annex identifier
 * (variable) identifier
 * data unique_component_classifier_reference
 * 'NIL'|array_sizes
 * ' '|initial_value
 * line number (integer)

notes:

 * package_name is mandatory for AADL v2 (warning message 001)