How to pass names of deep parameters into CLIReporter parameter columns?

1

Hi, suppose I have tune parameter space that looks like:
{
“model”: {
“alpha”: tune.choice([2,3])
},
“optimizer”: {
“lr”: tune.choice([0.1, 0.2])
},
… # some other random configs
}

What should I pass to CLIReporter.parameter_columns so that it only records model.alpha and optimizer.lr?

Thank you very much in advance.