code: def test_antiderivative(self, xp, scp):
      b = self._make_random_spline(xp, scp)
      t, c, k = b.tck
      xx = xp.linspace(t[k], t[-k - 1], 20)
      r1 = b.antiderivative().derivative()(xx)
  
      # repeat with N-D array for c
      c = xp.c_[c, c, c]
      c = xp.dstack((c, c))
      b = scp.interpolate.BSpline(t, c, k)
      r2 = b.antiderivative().derivative()(xx)
      return r1, r2
  
imports: import pytest
  import inspect
  from cupy import testing
  from cupy_backends.cuda.api import driver
  from cupy_backends.cuda.api import runtime
  import numpy
  import cupyx.scipy.interpolate
label_desc: Use image node_id 24 for calling the TestBSpline obj's underlying member method code with example usage: obj.test_antiderivative(xp, scp) and returns: r1,  r2