code: def _init_axis_artists(self, axes=None):
      if axes is None:
          axes = self
  
      self._axislines = self.AxisDict(self)
  
      self._axislines["bottom"] = SimpleAxisArtist(
          self.xaxis, 1, self.spines["bottom"]
      )
      self._axislines["top"] = SimpleAxisArtist(
          self.xaxis, 2, self.spines["top"]
      )
      self._axislines["left"] = SimpleAxisArtist(
          self.yaxis, 1, self.spines["left"]
      )
      self._axislines["right"] = SimpleAxisArtist(
          self.yaxis, 2, self.spines["right"]
      )
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import matplotlib.axes
  from matplotlib.artist import Artist
  from matplotlib.axis import XAxis, YAxis
label_desc: Use image node_id 2 for calling the Axes obj's underlying member method code with example usage: obj._init_axis_artists(axes) without return types