code: def test_complex_no_repeat(self, xp, scp):
      p = xp.asarray([-1.0, 1.0j, 0.5 + 0.5j, -1.0 - 1.0j, 3.0 + 2.0j])
      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 3 for calling the TestUniqueRoots obj's underlying member method code with example usage: obj.test_complex_no_repeat(xp, scp) and returns: unique,  multiplicity