docs: function getSelectorList(eventName){
    if (hasOwnProperty.call(eventMap, eventName))
      return eventMap[eventName];
  
    var selectorList = eventMap[eventName] = [];
    var inputTimeout = null;
  
    switch (eventName) {
      case SHOW_EVENT:
        selectorList.visible = {};
        setInterval(checkShow, VISIBLE_CHECK_INTERVAL);
        break;
  
      default:
        eventUtils.addGlobalHandler(eventName, function(event){
          var path = event.path.reduce(function(res, node){
            var role = node.getAttribute ? node.getAttribute('role-marker') : null;
            if (role)
              res.unshift(parseRole(role));
            return res;
          }, []);
  
          // if there is at least one `role-marker` attribute in the DOM [x]path for the clicked (or hovered or `event`ed) element
          // then lets search a matching selector in our loaded track map
          if (path.length)
            selectorList.forEach(function(item){
              var result = handleEventFor(path, item, event);
              if (result)
                if (result.debounce)
                {
                  clearTimeout(inputTimeout);
                  inputTimeout = setTimeout(function(){
                    track(result.dataToTrack);
                  }, INPUT_DEBOUNCE_TIMEOUT);
                }
                else
                {
                  track(result.dataToTrack);
                }
            });
        });
    }
  
    return selectorList;
  }