console.log('chunk component upsert children');

    console.log(`chunk component upsert children has ${this.children.size()} children`);

      // for (let [childKey, childComponent] of childrenToDelete.entries()) {
      //   console.log('chunk component todelete iteration');
      //   childComponent.willUnmount();
      //   this.children.remove(childKey);
      //   this.container.removeChild(childComponent.container);
      // }

    }
    console.log(`chunk component to delete has ${childrenToDelete.size()} children`);
    for (let [childKey, childComponent] of childrenToDelete.entries()) {
      childComponent.willUnmount();
      this.children.remove(childKey);
      this.container.removeChild(childComponent.container);