How to trigger a handler on OSM layer tile load

[jacksonjacobs1]

Thanks for supporting this excellent package!

I would like to attach an event listener to an OSM layer so that a custom handler function is triggered every time an image tile is requested/loaded from the tile server. The code would look something like this:

tileLayer.geoOn(geo.event.tileLoad, handlerFunction)

However, the GeoJS API doesn't seem to expose any such event. Does this functionality exist, and if so, is my API usage above on the right track?