code: def l1b_file(tmp_path, atms_fake_dataset):
      """Return file path to level1b file."""
      l1b_file_path = tmp_path / "test_file_atms_l1b.nc"
      atms_fake_dataset.to_netcdf(l1b_file_path)
      return l1b_file_path
  
file_path: satpy/satpy/tests/reader_tests/test_atms_l1b_nc.py
imports: from datetime import datetime
  import numpy
  import pytest
  import xarray
  from satpy.readers.atms_l1b_nc import AtmsL1bNCFileHandler
label_desc: Use image node_id 2 for calling a global function with example usage: l1b_file(tmp_path, atms_fake_dataset) and returns: l1b_file_path