code: def _get_left(tight_bbox, axes_bbox):
      return axes_bbox.xmin - tight_bbox.xmin
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import matplotlib.cbook
  from matplotlib.axes import Axes
label_desc: Use image node_id 1 for calling the GetExtentHelper obj's underlying member method code with example usage: obj._get_left(tight_bbox, axes_bbox) and returns: unknown