code: def test_random_tangent_vec_imaginary_nonzero(self, n_points, atol):
      point = self.data_generator.random_point(n_points)
      tangent_vec = self.data_generator.random_tangent_vec(point)
  
      res = gs.imag(gs.abs(tangent_vec))
      self.assertAllClose(res, gs.zeros_like(tangent_vec), atol=atol)
  
file_path: geomstats/geomstats/test_cases/geometry/complex_manifold.py
imports: import pytest
  import geomstats.backend
  from geomstats.test.test_case import TestCase
  from geomstats.test_cases.geometry.manifold import _ManifoldTestCaseMixins
label_desc: Use image node_id 4 for calling the ComplexManifoldTestCase obj's underlying member method code with example usage: obj.test_random_tangent_vec_imaginary_nonzero(n_points, atol) without return types