'Clone a volume our of an existing volume.'

def clone_volume(self, parent_name, clone_name, utc_date=None, str_date=None, bookmark_name=None, description=None):

    cmd = RdxApiCmd(cmd_prefix=[VOLUMES, 'clone'])
    cmd.set_argument(parent_name)
    cmd.add_flag('name', clone_name)
    if (str_date is not None):
        cmd.add_flag('timestamp', str_date)
    else:
        cmd.add_flag('timestamp', ReduxioAPI._utc_to_cli_date(utc_date))
    cmd.add_flag('bookmark', bookmark_name)
    cmd.add_flag('description', description)
    self._run_cmd(cmd)
