display the error message to the users using the message sinks . concode_field_sep List<MessageSink> implementations concode_field_sep void add concode_elem_sep void warn concode_elem_sep void warn concode_elem_sep void inform concode_elem_sep void inform
void function ( String arg0 ) { for ( MessageSink loc0 : implementations ) { loc0 . error ( arg0 ) ; } }