code: def watershed_with_seeds(image, seeds, mask=None):
      
      ar = skimage.morphology.watershed(-image, seeds, mask=mask)
      segmentation = SegmentedImage.from_array(ar)
      return segmentation
docs: Return :class:`jicbioimage.core.image.SegmentedImage`.
  
      :param image: input :class:`jicbioimage.core.image.Image`
      :param seeds: numpy.ndarray of same shape as image,
                    each seed needs to be a unique integer
      :param mask: bool numpy.ndarray of same shape as image,
                   only regions that are marked as True will be labelled
      :returns: :class:`jicbioimage.core.image.SegmentedImage`