in modules/manifold/src/utils/kepler-utils.js [161:173]
export function getLayerColumns(geoFeatureDef, layerType) {
const _layerType = layerType || getLayerType(geoFeatureDef);
const {
name: fieldColName,
pair: [{name: latCol}, {name: lngCol}] = [{}, {}],
} = geoFeatureDef;
return _layerType === LAYER_TYPES.hexagonId
? {hex_id: fieldColName}
: {
lat: latCol,
lng: lngCol,
};
}