code: def test_complex_roots_extra(self, xp, scp, p):
      p = xp.asarray(p)
      unique, multiplicity = scp.signal.unique_roots(p)
      return unique, multiplicity
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx.scipy.signal
label_desc: Use image node_id 6 for calling the TestUniqueRoots obj's underlying member method code with example usage: obj.test_complex_roots_extra(xp, scp, p) and returns: unique,  multiplicity