Problem: Unsure how to set a custom icon for the cluster symbol, not the individual points or even the label of the cluster but the symbology for the cluster icon itself.
Context: A Feature Layer is being rendered by unique value with picture marker symbols for each value. When clustering is applied it picks one of the PictureMarkerSymbols to use as the symbology for the cluster point itself. I would like to have a completely different symbol for the cluster itself.
Is there a way to customise the cluster icon?
TLDR: Esri Leaflet seems to accomplish exactly what I am describing (see link and gif): https://esri.github.io/esri-leaflet/examples/styling-clusters.html Is the cluster symbol being different from the feature symbol possible to do in the ESRI JS API?