code: def test_vectorization(self, xp, scp, dtype):
      if xp.dtype(dtype).kind == "u":
          pytest.skip()
  
      n, k = 22, 3
      t = xp.sort(xp.random.random(n))
      c = xp.random.random(size=(n, 6, 7))
      b = scp.interpolate.BSpline(t, c, k)
      tm, tp = t[k], t[-k - 1]
      xx = tm + (tp - tm) * xp.random.random((3, 4, 5))
      return b(xx).shape
  
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 6 for calling the TestBSpline obj's underlying member method code with example usage: obj.test_vectorization(xp, scp, dtype) and returns: b