code: def processEvent(cls, event):
          
          callbacks = cls.callbacks(type(event))
          keep_going = True
          remove_callbacks = []
  
          for callback, record, once in callbacks:
              if record is not None and record != event.record:
                  continue
  
              callback(event)
              if once:
                  remove_callbacks.append((callback, record))
  
              if event.preventDefault:
                  keep_going = False
                  break
  
          for callback, record in remove_callbacks:
              cls.removeCallback(type(event), callback, record=record)
  
          return keep_going
docs: Processes the given event by dispatching it to any waiting callbacks.
  
          :param event: <orb.Event>