code: def plot_this(self, this):
      from pylab import plot, show
  
      plot(this)
      show()
  
imports: from numpy.testing import TestCase
  from numpy.testing import assert_equal, assert_almost_equal
  import numpy
  from aubio import fvec, fft, cvec
  from math import pi, floor
  from random import random
label_desc: Use image node_id 8 for calling the aubio_fft_test_case obj's underlying member method code with example usage: obj.plot_this(this) without return types