code: def set_extremes(self, e1, e2):
      self._extremes = e1, e2
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from six.moves import zip
  from itertools import chain
  from .grid_finder import GridFinder
  from .axislines import AxisArtistHelper, GridHelperBase
  from .axis_artist import AxisArtist
  from matplotlib.transforms import Affine2D, IdentityTransform
  import numpy
  from matplotlib.path import Path
label_desc: Use image node_id 2 for calling the FloatingAxisArtistHelper obj's underlying member method code with example usage: obj.set_extremes(e1, e2) without return types