def METHOD_NAME(self, fields=None):
    '''
    Retrieves the list of scan zone definitions.
    :sc-api:`scan-zone: list <Scan-Zone.htm#zone_GET>`
    Args:
        fields (list, optional):
            A list of attributes to return for each scan.
    Returns:
        :obj:`list`:
            A list of scan zone resources.
    Examples:
        >>> for zone in sc.scan_zones.list():
        ...     pprint(zone)
    '''
    params = dict()
    if fields:
        params['fields'] = ','.join([self._check('field', f, str)
            for f in fields])
    return self._api.get('zone', params=params).json()['response']