setOpacity method
Sets the opacity of a layer or geometry source (0.0 to 1.0). This provides a unified API matching the Web SDK.
Implementation
Future<void> setOpacity(String id, double opacity) async {
// 1. Try treating as a Geometry source first
await geometry.setOpacity(id, opacity);
// 2. Then try as a Catalog layer
await layers.setOpacity(id, opacity);
}