addStyleCustomLayer

Adds a new [style custom layer](https://docs.mapbox.com/mapbox-gl-js/style-spec/#layers). Runtime style layers are valid until they are either removed or a new style is loaded.

Return

A string describing an error if the operation was not successful, or empty otherwise.

Parameters

layerHost

The `custom layer host`.

layerId

A style layer identifier.

layerPosition

If not empty, the new layer will be positioned according to `layer position` parameters.

open fun addStyleCustomLayer(layerId: String, layerHost: CustomLayerHost, layerPosition: LayerPosition): Expected<String, None>