question: returns radio connection concode_field_sep List<RadioConnectionArrow> historyList concode_elem_sep RadioConnection conn concode_elem_sep float TRANSMITTED_COLOR_RGB[] concode_elem_sep float UNTRANSMITTED_COLOR_RGB[] concode_elem_sep Logger logger concode_elem_sep boolean active concode_elem_sep TimeEvent ageArrowsTimeEvent concode_elem_sep AbstractRadioMedium radioMedium concode_elem_sep Polygon arrowPoly concode_elem_sep Simulation simulation concode_elem_sep int MAX_AGE concode_elem_sep Visualizer visualizer concode_elem_sep int age concode_elem_sep int MAX_HISTORY_SIZE concode_elem_sep Observer radioMediumObserver concode_field_sep float getAge concode_elem_sep Color[] getColorOf concode_elem_sep Visualizer getVisualizer concode_elem_sep void setInactive concode_elem_sep void update concode_elem_sep boolean increaseAge concode_elem_sep void execute concode_elem_sep void setActive concode_elem_sep int yCor concode_elem_sep int xCor concode_elem_sep void paintBeforeMotes concode_elem_sep void drawArrow concode_elem_sep void paintAfterMotes
target: RadioConnection function ( ) { return conn ; }