removeGeoJson (name) {
        const geoJsons = [];

        for (let i = 0; i < this._geoJsons.length; ++i) {
            const layer = this._geoJsons[i];
            if (layer.name !== name) {
                geoJsons.push(layer);
            }
        }

        this._geoJsons = geoJsons;

        return this;
    }
Remove a GeoJson layer from this chart by name
@param {String} name
@returns {GeoChoroplethChart}