code: def test_trimcoef_zeros(self, xp, dtype):
      a = xp.zeros(10, dtype)
      return xp.polynomial.polyutils.trimcoef(a, dtype(self.tol))
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 4 for calling the TestTrimcoef obj's underlying member method code with example usage: obj.test_trimcoef_zeros(xp, dtype) and returns: xp