class_docstr: LVIS PyTorch Object Detection Dataset
class_docstr_tok: ["LVIS","PyTorch","Object","Detection","Dataset"]
code: def _download_error_message(self) -> str:
      return (
          "[LVIS] Error downloading the dataset. Consider "
          "downloading it manually at: https://www.lvisdataset.org/dataset"
          " and placing it in: " + str(self.root)
      )
  
imports: from pathlib import Path
  from typing import Optional, Union, List, Sequence
  import torch
  from PIL import Image
  from torchvision.datasets.folder import default_loader
  from torchvision.transforms import ToTensor
  from typing_extensions import TypedDict
  from avalanche.benchmarks.datasets import DownloadableDataset, default_dataset_location
  from avalanche.benchmarks.datasets.lvis_dataset.lvis_data import lvis_archives
label_desc: Use image node_id 4 for calling the LvisDataset obj's underlying member method code with example usage: obj._download_error_message() and returns: unknown