code: def callback(point):
      """Create a cube and a label at the click point."""
      mesh = pv.Cube(
          center=point, x_length=0.05, y_length=0.05, z_length=0.05
      )
      pl.add_mesh(mesh, style="wireframe", color="r")
      pl.add_point_labels(
          point, [f"{point[0]:.2f}, {point[1]:.2f}, {point[2]:.2f}"]
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: callback(point) without return types