adds a pair of a pre-image and an image to the bijection . concode_field_sep Map<I,P> inverse concode_elem_sep Map<P,I> map concode_field_sep P getPreImage concode_elem_sep I getImage
void function ( P arg0 , I arg1 ) { map . put ( arg0 , arg1 ) ; inverse . put ( arg1 , arg0 ) ; }