'Get a list of snapshots marked for deletion.'

def get_snapshots_marked_for_deletion(self, volume_list=None):

    snapshots = []
    for volume_name in volume_list:
        api_args = {'target-name': volume_name, 'target-type': 'volume', 'terse': 'true'}
        result = self.send_request('snapshot-list-info', api_args)
        snapshots.extend(self._parse_snapshot_list_info_result(result, volume_name))
    return snapshots
