code: def test_handlerline3d():
      # Test marker consistency for monolithic Line3D legend handler.
      fig, ax = plt.subplots(subplot_kw=dict(projection="3d"))
      ax.scatter([0, 1], [0, 1], marker="v")
      handles = [art3d.Line3D([0], [0], [0], marker="v")]
      leg = ax.legend(handles, ["Aardvark"], numpoints=1)
      assert (
          handles[0].get_marker() == leg.legend_handles[0].get_marker()
      )
  
file_path: matplotlib/lib/mpl_toolkits/mplot3d/tests/test_legend3d.py
imports: import numpy
  import matplotlib
  from matplotlib.colors import same_color
  from matplotlib.testing.decorators import image_comparison
  import matplotlib.pyplot
  from mpl_toolkits.mplot3d import art3d
label_desc: Use image node_id 5 for calling a global function with example usage: test_handlerline3d() without return types