Help converting old version to the new one please

First issue is I'm not sure how I can set the zoomOnClick, gridSize, etc in the new version. I am able to get my markers to show though on the map.
```
/*//set marker clusterer
markerCluster = MarkerClusterer(map, markers,
{
zoomOnClick: false,
gridSize: 50,
imagePath: '/assets/img/gmaps/clusterplus/m',
title: 'Multiple Entries'
}
);
*/

//edited 02-19-22 to markerClusterer.MarkerClusterer from markerClusterer (see notes about using the npm downloaded version at https://www.npmjs.com/package/@googlemaps/markerclusterer)
markerCluster = new markerClusterer.MarkerClusterer({ map, markers });
```

Second issue is I don't understand how to use the new 'onClusterClick' way. I was previously using a listener for this which no longer works with the new version. https://googlemaps.github.io/js-markerclusterer/interfaces/MarkerClustererOptions.html goes into the options of the new version and mentions a 'onClusterClick', but I haven't been able to get it to do anything.

```
/*
//no longer works with new version
//marker clusterer click
google.maps.event.addListener(markerCluster, 'clusterclick', function(cluster) {
//close any open windows
infowindow.close();

//if zoom is less than max show just zoom in
if(map.getZoom() < map.maxZoom ){
map.setCenter(cluster.center_);
map.setZoom(map.getZoom() + 2);
}
//show custom window with multiple ip address details
else {
//get markers length
var markersLength = cluster.getMarkers().length;

var detailContent = '' + cluster.getMarkers().length + ' IP Addresses :

'+
'

'+
'

---

';

for (var i=0; i < markersLength; i++)
{
detailContent += ''+
'';
}

var info = new google.maps.MVCObject;
info.set('position', cluster.center_);
infowindow.setContent(detailContent);
infowindow.open(map, info);
}
});
*/
```

Any help or clarification would be appreciated.