code: def coords():
      """Node coordinates for testing."""
      return np.array(
          [[39, 6, -32], [29, 40, 1], [-20, -74, 35], [-29, -59, -37]]
      )
  
imports: import os
  import matplotlib.pyplot
  import numpy
  import pytest
  from nilearn.conftest import _rng
  from nilearn.plotting import plot_markers
label_desc: Use image node_id 1 for calling a global function with example usage: coords() and returns: np