zedd45/Leaflet — comment on commit 9c9b4f9336d0abbc64360c016b96446a005d0466
File: src/layer/marker/Marker.Cluster.js line 35
By zedd45:

This is bad. It's too tightly coupled to properties of another object. I'm working on improving this, but it's proving difficult to manage all the layers in an intelligent fashion.