code: def sync(self, query=None):
          
  
          if query is None:
              query = {}
          self._normalize_sync(query)
  
          return self._get(
              self.environment_url('/sync'),
              query
          )
docs: Fetches content from the Sync API.
  
          API Reference: https://www.contentful.com/developers/docs/references/content-delivery-api/#/reference/synchronization/initial-synchronization/query-entries
  
          :param query: (optional) Dict with API options.
          :return: :class:`SyncPage <contentful.sync_page.SyncPage>` object.
          :rtype: contentful.sync_page.SyncPage
  
          Usage:
              >>> sync_page = client.sync({'initial': True})
              <SyncPage next_sync_token='w5ZGw6JFwqZmVcKsE8Kow4grw45QdybC...'>