adds element elem to set if it 's not in there already concode_field_sep ArrayList<T> set concode_field_sep boolean contains concode_elem_sep int size concode_elem_sep ArrayList<T> getSet concode_elem_sep T getElement concode_elem_sep void clear concode_elem_sep void copy
void function ( T arg0 ) { if ( ! ( this . set . contains ( arg0 ) ) ) this . set . add ( arg0 ) ; }