Working example of create_channel anyone?

Can anyone provide an example of how to create a channel. I’ve tried basing my code on the example in the docs, but it just tells me an error has occured. If I could see the error it might help, but am too much of a newbie to know how to display it!

$this->EE->load->library('api');
$this->EE->api->instantiate('channel_structure');

        
        $data = array( 'channel_title' => 'test', 'channel_name' => 'test'); 
        if ($this->EE->api_channel_structure->create_channel($data) === FALSE) { show_error('An Error Occurred Creating the Channel <pre>' . '</pre>

<p>'); }

I’ve stripped the call down to the bare minimum to try and find out what I’m doing wrong, but to no avail.

Any clues would be most welcome!

Andrew