class_docstr: Writer class of fake ici level1b data.
class_docstr_tok: ["Writer","class","of","fake","ici","level1b","data","."]
docstr: Write attributes.
docstr_tok: ["Write","attributes","."]
code: def _write_attributes(dataset):
      """Write attributes."""
      dataset.sensing_start_time_utc = "2000-01-02 03:04:05.000"
      dataset.sensing_end_time_utc = "2000-01-02 04:05:06.000"
      dataset.instrument = "ICI"
      dataset.spacecraft = "SGB"
  
imports: from datetime import datetime
  from unittest.mock import patch
  import numpy
  import pytest
  import xarray
  from netCDF4 import Dataset
  from satpy.readers.ici_l1b_nc import IciL1bNCFileHandler, InterpolationType
label_desc: Use image node_id 3 for calling the IciL1bFakeFileWriter obj's underlying member method code with example usage: obj._write_attributes(dataset) without return types