Request a feature or report a bug? [需求]

One-line summary [没有实例中的LayerSwitch控件]

Version [产品及版本]

• iClient product (for leaflet,for openlayers,for mapboxgl,classic)[openlayers]:
• iClient version [10]:
• Browser version 谷歌]:
• OS Version [win10]:

What is motivation or use case for changing the behavior? [实现图层控制]