code: def plot_voxels(varray, ax, title):
      ax.view_init(20, 200)
      ax.voxels(varray, edgecolor="k")
      ax.set_title(title, fontsize=30)
  
imports: import matplotlib.pyplot
  import numpy
  import scipy.ndimage
label_desc: Use image node_id 2 for calling a global function with example usage: plot_voxels(varray, ax, title) without return types