[radarhere]

See what you think of this idea - instead of

class ImageFile:
  def _seek_check(self, frame):
    # Check if the user is seeking outside the sequence, or to the same frame

class GifImageFile(ImageFile):
  def seek(self, frame):
	if not self._seek_check(frame):
      return
    # Continue on with seek

what if we didn't have to repeat that check in each plugin's code?

class ImageFile:
  pass

class SeekableImageFile(ImageFile):
  def seek(self, frame):
    # Check if the user is seeking outside the sequence, or to the same frame
    
    self._seekTo(frame)

  @abc.abstractmethod
  def _seekTo(self, frame):
    pass

class GifImageFile(SeekableImageFile):
  def _seekTo(self, frame):
    # Seek