code: def run(iter, visualizer, epoch, stage, data):
      visualizer.reset(epoch, stage)
      for i in range(iter):
          visualizer.save_visuals(data)
  
file_path: torch-points3d/test/test_visualization.py
imports: import unittest
  import os
  import shutil
  import sys
  from omegaconf import OmegaConf
  import torch
  from torch_geometric.data import Data
  from torch_points3d.visualization import Visualizer
label_desc: Use image node_id 1 for calling a global function with example usage: run(iter, visualizer, epoch, stage, data) without return types