removeLoadedExtent(extent) {
    const loadedExtentsRtree = this.loadedExtentsRtree_;
    const obj = loadedExtentsRtree.forEachInExtent(extent, function (object) {
      if (equals(object.extent, extent)) {
        return object;
      }
    });
    if (obj) {
      loadedExtentsRtree.remove(obj);
    }
  }
Remove an extent from the list of loaded extents.
@param {import("../extent.js").Extent} extent Extent.
@api