How to use the @here/harp-datasource-protocol.isCirclesTechnique function in @here/harp-datasource-protocol

private addFeatureData(srcGeometry: Geometry, technique: Technique, object: THREE.Object3D) {
        if (
            ((srcGeometry.objInfos !== undefined && srcGeometry.objInfos.length > 0) ||
                isCirclesTechnique(technique) ||
                isSquaresTechnique(technique)) &&
            !isSolidLineTechnique(technique)
        ) {
            const featureData: TileFeatureData = {
                geometryType: srcGeometry.type,
                starts: srcGeometry.featureStarts,
                objInfos: srcGeometry.objInfos
            };
            object.userData.feature = featureData;
        }
    }