How to use the @igo2/common.getEntityIcon function in @igo2/common

get icon(): string {
    return getEntityIcon(this.feature) || 'link';
  }

get icon(): string {
    return getEntityIcon(this.result);
  }

  get icon(): string { return getEntityIcon(this.feature) || 'link'; }

if (feature.extent !== undefined) {
    olFeature.set('_extent', feature.extent, true);
  }

  if (feature.projection !== undefined) {
    olFeature.set('_projection', feature.projection, true);
  }

  const mapTitle = getEntityProperty(feature, 'meta.mapTitle');
  if (mapTitle !== undefined) {
    olFeature.set('_mapTitle', mapTitle, true);
  }

  olFeature.set('_entityRevision', getEntityRevision(feature), true);

  const icon = getEntityIcon(feature);
  if (icon !== undefined) {
    olFeature.set('_icon', icon, true);
  }

  if (feature.meta && feature.meta.style) {
    olFeature.set('_style', feature.meta.style, true);
  }

  return olFeature;
}

get icon(): string {
    return getEntityIcon(this.layer) || 'layers';
  }