code: def nbins(self):
      return self.den
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import numpy
  import math
  from mpl_toolkits.axisartist.grid_finder import ExtremeFinderSimple
label_desc: Use image node_id 2 for calling the LocatorBase obj's underlying member method code with example usage: obj.nbins() and returns: self