code: def _ReadPartitionKeyRanges(self, collection_link, feed_options=None):
          
          if feed_options is None:
              feed_options = {}
  
          return self._QueryPartitionKeyRanges(collection_link, None, feed_options)
docs: Reads Partition Key Ranges.
  
          :param str collection_link:
              The link to the document collection.
          :param dict feed_options:
  
          :return:
              Query Iterable of PartitionKeyRanges.
          :rtype:
              query_iterable.QueryIterable