code: def _generate_octahedron():
      return np.array(
          [
              [-1, 0, 0],
              [+1, 0, 0],
              [0, -1, 0],
              [0, +1, 0],
              [0, 0, -1],
              [0, 0, +1],
          ]
      )
  
imports: import pytest
  import numpy
  from numpy.testing import assert_array_almost_equal
  from scipy.spatial.transform import Rotation
  from scipy.optimize import linear_sum_assignment
  from scipy.spatial.distance import cdist
  from scipy.constants import golden
  from scipy.spatial import cKDTree
label_desc: Use image node_id 5 for calling a global function with example usage: _generate_octahedron() and returns: np