code: def _parse_list_buckets(self, (response, xml_bytes)):
          
          root = XML(xml_bytes)
          buckets = []
          for bucket_data in root.find("Buckets"):
              name = bucket_data.findtext("Name")
              date_text = bucket_data.findtext("CreationDate")
              date_time = parseTime(date_text)
              bucket = Bucket(name, date_time)
              buckets.append(bucket)
          return buckets
docs: Parse XML bucket list response.