removeCallback = () => {
    const addedCallbacks = this._addHeightCallbacks;
    const length = addedCallbacks.length;
    for (let i = 0; i < length; ++i) {
      if (addedCallbacks[i] === object) {
        addedCallbacks.splice(i, 1);
        break;
      }
    }

    if (object.callback) {
      object.callback = undefined;
    }
  }
Calls the callback when a new tile is rendered that contains the given cartographic. The only parameter
is the cartographic position on the tile.

@private

@param {Scene} scene The scene where visualization is taking place.
@param {Cartographic} cartographic The cartographic position.
@param {Function} callback The function to be called when a new tile is loaded.
@param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid to use.
@returns {Function} The function to remove this callback from the quadtree.