void function ( E arg0 ) { if ( additions == null ) additions = new ArrayList < E > ( ) ; additions . add ( arg0 ) ; }
adds a new entry as an addition to this mutation concode_field_sep List<E> additions concode_elem_sep List<K> deletions concode_field_sep List<E> getAdditions concode_elem_sep List<K> getDeletions concode_elem_sep void deletion concode_elem_sep void merge concode_elem_sep boolean hasDeletions concode_elem_sep boolean hasAdditions