code: def test_plot_markers_node_kwargs(coords):
      """Smoke test for plot_markers testing that node_kwargs is working
      and does not interfere with alpha.
      """
      node_kwargs = dict(marker="s")
      plot_markers(
          [1, 2, 3, 4],
          coords,
          alpha=0.1,
          node_kwargs=node_kwargs,
          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 9 for calling a global function with example usage: test_plot_markers_node_kwargs(coords) without return types