code: def test_zmap_nan_policy_omit(self, xp, scp, dtype):
      x = xp.array([4.0, 1.0, 1.0, xp.nan], dtype=dtype)
      y = xp.array([xp.nan, -4.0, -1.0, -5.0], dtype=dtype)
      return scp.stats.zmap(x, y, nan_policy="omit")
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx
  import cupyx.scipy.stats
label_desc: Use image node_id 10 for calling the TestZmap obj's underlying member method code with example usage: obj.test_zmap_nan_policy_omit(xp, scp, dtype) and returns: scp