code: def test_exists(tmp_fs_path):
      path = osp.join(tmp_fs_path, "file.txt")
      assert not fs.exists(path)
      with fsspec.open(path, "w") as f:
          f.write("here")
      assert fs.exists(path)
  
file_path: pytorch_geometric/test/io/test_fs.py
imports: import zipfile
  from os import path
  import fsspec
  import pytest
  import torch
  import torch_geometric.typing
  from torch_geometric.data import extract_zip
  from torch_geometric.io import fs
  from torch_geometric.testing import noWindows
label_desc: Use image node_id 4 for calling a global function with example usage: test_exists(tmp_fs_path) without return types