code: def get_tightbbox(self, renderer, call_axes_locator=True):
      bbs = [
          ax.get_tightbbox(renderer, call_axes_locator)
          for ax in self.parasites
      ]
      get_tightbbox = self._get_base_axes_attr("get_tightbbox")
      bbs.append(get_tightbbox(self, renderer, call_axes_locator))
  
      _bbox = Bbox.union(
          [b for b in bbs if b.width != 0 or b.height != 0]
      )
  
      return _bbox
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from matplotlib import artist, collections, transforms, rcParams
  from matplotlib.axes import subplot_class_factory
  from matplotlib.transforms import Bbox
  from .mpl_axes import Axes
  import numpy
label_desc: Use image node_id 9 for calling the HostAxesBase obj's underlying member method code with example usage: obj.get_tightbbox(renderer, call_axes_locator) and returns: _bbox