code: def target_boxes():
      boxes = []
      boxes.append(Tensor([[2, 2, 2, 2], [4, 2, 7, 5], [2, 8, 3, 8]]))
      boxes.append(Tensor([[0, 0, 1, 1], [8, 8, 9, 0]]))
      boxes.append(Tensor([[1, 4, 3, 7], [4, 2, 5, 3]]))
      boxes.append(torch.empty((0, 4)))
      return boxes
  
imports: import pytest
  import torch
  from torch import Tensor
  from anomalib.data.utils.boxes import boxes_to_anomaly_maps, boxes_to_masks, masks_to_boxes
label_desc: Use image node_id 4 for calling a global function with example usage: target_boxes() and returns: boxes