def listKeys(self, args):
        """
            List your public keys.
        """
        users = self.api.read_users()
        if args.id:
            key = self.api.read_user_key(users[0]['username'], args.id)
            print_key(key)
        else:
            keys = self.api.read_user_keys(users[0]['username'])
            print_keys(keys)