featureCollection.features.forEach((feature, index) => {
        if (
          feature.properties["@geometry-type"] &&
          feature.properties["@geometry-type"] === "groundoverlay"
        ) {
          const tempName = sourceName + "-overlay-" + index;
          if (!map.getSource(tempName)) {
            let imageSource = feature.properties.icon;
            if (imageSource.startsWith("files/")) {
              imageSource = imageSource.substring(6, imageSource.length);
            }
            globalThis.map.addSource(tempName, {
              type: "image",
              url: feature.properties.icon,
              coordinates: feature.geometry.coordinates[0].slice(
                0,
                4 // feature.geometry.coordinates[0].length - 1
              ),
            });
            globalThis.map.addLayer({
              id: tempName,
              type: "raster",
              source: tempName,
            });
          }
        } 
      });