110   fire: function(event, element) {  argument
170   updateDrag: function(event) {  argument
181   endDrag: function(event) {  argument
192   keyPress: function(event) {  argument
207   notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'  argument
301   initDrag: function(event) {  argument
323   startDrag: function(event) {  argument
357   updateDrag: function(event, pointer) {  argument
397   finishDrag: function(event, success) {  argument
444   keyPress: function(event) {  argument
450   endDrag: function(event) {  argument