Method _addLayer

src/common/mapping/WebMapV2.js:2999–3013

(layerInfo, parentLayerId = layerInfo.id, beforeId)

    }

    _addLayer(layerInfo, parentLayerId = layerInfo.id, beforeId) {
      const { id } = layerInfo;
      if (this.map.getLayer(id)) {
        if (this.checkSameLayer && this._isSameRasterLayer(id, layerInfo.source)) {
          this._setCacheLayer({ layerInfo, parentLayerId, id, reused: true, beforeId });
          return;
        }
        this._updateLayer(layerInfo);
        return;
      }
      const nextLayerInfo = Object.assign({}, layerInfo);
      nextLayerInfo.metadata = Object.assign({}, nextLayerInfo.metadata, { SM_Layer_Id: parentLayerId })
      this.map.addLayer(nextLayerInfo);
      this._setCacheLayer({ layerInfo, parentLayerId, id, beforeId });
    }

    _setCacheLayer({ parentLayerId, layerInfo, reused = false, beforeId, subRenderLayers, metadata }) {
      const renderLayers = subRenderLayers || [{ layerId: layerInfo.id, reused }];