code: def _iplot(self, df, **kwargs):
      return df.iplot(asFigure=True, **kwargs)
  
imports: import cufflinks
  import pandas
  import numpy
  import unittest
  from nose.tools import assert_equals
label_desc: Use image node_id 2 for calling the TestIPlot obj's underlying member method code with example usage: obj._iplot(df) and returns: df