keyByHeatmapId function
Converts an Iterable of Heatmaps in a Map of HeatmapId -> Heatmap.
Implementation
Map<HeatmapId, Heatmap> keyByHeatmapId(Iterable<Heatmap> heatmaps) {
return keyByMapsObjectId<Heatmap>(heatmaps).cast<HeatmapId, Heatmap>();
}