code: def node_coords():
      """Array of node coordinates for testing."""
      return np.arange(3 * 4).reshape(4, 3)
  
imports: import os
  import matplotlib.pyplot
  import numpy
  import pytest
  from matplotlib.patches import FancyArrow
  from scipy import sparse
  from nilearn.plotting import plot_connectome
label_desc: Use image node_id 4 for calling a global function with example usage: node_coords() and returns: np