'''isConnection/10'''

 * 'NIL'|'FEATURE'|'PORT'|'FEATURE GROUP'|'ACCESS'|'PARAMETER'
 * 'NIL'|package_name
 * component_type_identifier
 * component_implementation_identifier
 * (connection) identifier
 * source_reference
 * '->>'|'->'|'<->'
 * destination_reference
 * 'NIL'|'REFINED TO'
 * line number (integer)

notes:

 * package_name is mandatory for AADL v2 (warning message 001)
 * delayed connection symbol ->> is not allowed for AADL v2 (warning message 010)
 * first parameter must not be NIL for AADL v2.1 (warning message 020)
 * connection identifier is mandatory for AADL v2.1 (warning message 021)
 * if the connection_kind is set on ACCESS, the access_kind may be set using isConnection2/11