setLayerVisibility(layerId, visibility) {
        const me = this;

        me.map.setLayoutProperty(layerId, 'visibility', visibility);
        return me;
    }
Sets the visibility of the layer.
@param {string} layerId - The ID of the layer to set the visibility in.
@param {string} visibility - Whether this layer is displayed.
    'visible' and 'none' are supported.
@returns {Map} Returns itself to allow for method chaining