code: def test_plot_markers_node_sizes(node_size, coords):
      """Smoke test for plot_markers with different node sizes."""
      plot_markers(
          [1, 2, 3, 4], coords, node_size=node_size, display_mode="x"
      )
      plt.close()
  
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 3 for calling a global function with example usage: test_plot_markers_node_sizes(node_size, coords) without return types