Following the siple examples in the Dashboard docs, I ended up with the followinf file structure:

- Dashboard
|- index.php
|- App.php
|- MyBorad.php
|- MyTable.php

I would like to change it to:

- Dashboard
|- index.php
|- App.php
|- My
||- MyBorad.php
||- MyTable.php

Then in App.log, I try to load MyBoard as:

protected function dashboards() {
        return [
            'TestBoard' => My\MyBoard::create()
        ];
    }

but it did not work.

What am I missing to be able to separate boards into folders?