code: def test_zero_dim_axis_none(self, xp, scp, dtype):
      a = xp.array(0, dtype=dtype)
      return scp.stats.trim_mean(a, 2 / 6.0, axis=None)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx
  import cupyx.scipy.stats
label_desc: Use image node_id 3 for calling the TestTrim obj's underlying member method code with example usage: obj.test_zero_dim_axis_none(xp, scp, dtype) and returns: scp