How to use the @ionic/cli.CommandMetadata function in @ionic/cli

import { Command, CommandLineInputs, CommandLineOptions, CommandMetadata, ICommand } from '@ionic/cli';

@CommandMetadata({
  name: 'ssh',
  description: 'Generate and manage SSH keys, configure local SSH authentication',
  isProjectTask: false
})
export default class SSHCommand extends Command implements ICommand {
  async run(inputs: CommandLineInputs, options: CommandLineOptions): Promise {
    console.log('hi');
  }
}

const fsWriteFile = promisify(fs.writeFile);

interface SSHGenerateResponse extends APIResponseSuccess {
  data: {
    key: string,
    pubkey: string
  }
}

function isSSHGenerateResponse(r: APIResponse): r is SSHGenerateResponse {
  return isAPIResponseSuccess(r)
    && typeof r.data['key'] === 'string'
    && typeof r.data['pubkey'] === 'string';
}

@CommandMetadata({
  name: 'generate',
  description: 'Generates a private and public SSH key pair',
  options: [
    {
      name: 'key-path',
      description: 'Destination of private key file',
      default: 'id_rsa'
    },
    {
      name: 'pubkey-path',
      description: 'Destination of public key file',
      default: 'id_rsa.pub'
    }
  ],
  isProjectTask: false
})