code: def download_feed_posts(self, max_count: int = None, fast_update: bool = False,
                              post_filter: Optional[Callable[[Post], bool]] = None) -> None:
          
          self.context.log("Retrieving pictures from your feed...")
          count = 1
          for post in self.get_feed_posts():
              if max_count is not None and count > max_count:
                  break
              name = post.owner_username
              if post_filter is not None and not post_filter(post):
                  self.context.log("<pic by %s skipped>" % name, flush=True)
                  continue
              self.context.log("[%3i] %s " % (count, name), end="", flush=True)
              count += 1
              with self.context.error_catcher('Download feed'):
                  downloaded = self.download_post(post, target=':feed')
                  if fast_update and not downloaded:
                      break
docs: Download pictures from the user's feed.
  
          Example to download up to the 20 pics the user last liked::
  
              loader = Instaloader()
              loader.load_session_from_file('USER')
              loader.download_feed_posts(max_count=20, fast_update=True,
                                         post_filter=lambda post: post.viewer_has_liked)
  
          :param max_count: Maximum count of pictures to download
          :param fast_update: If true, abort when first already-downloaded picture is encountered
          :param post_filter: function(post), which returns True if given picture should be downloaded