Please Add a demo not involving BasicPage.dart file.

Hello,
I'd like to use this component in my project. But it's not so easy to get started with this since the installation instructions simply says "Import TreeView.dart.".
It might be that some Flutter experts will have the insight to understand precisely what that means but for the vast majority of casual hobby programmers this will not be the case.
Please take a moment to describe the installation steps in a bit more detail. Like how I have to modify pubspec.yaml, what files I need to copy where in my own project.

If not, how does one exactly include this into their project!?

Cheers!

AccountList tries to implement 'Util.alert(context)` but in Globals this method does not exist.

open bằng studio lỗi tùm lumlum, vào code thấy import 1 vài file dart mà tìm ko thấy?
import 'BasicPage.dart';