class_docstr: Write data in VISSR archive format.
class_docstr_tok: ["Write","data","in","VISSR","archive","format","."]
docstr: Write data to file.
  
  If specified, prepend with 'offset' placeholder bytes.
docstr_tok: ["Write","data","to","file",".","If","specified",",","prepend","with","'offset","'","placeholder","bytes","."]
code: def _write(self, fd, data, offset=None):
      """Write data to file.
  
      If specified, prepend with 'offset' placeholder bytes.
      """
      if offset:
          self._fill(fd, offset)
      fd.write(data.tobytes())
  
imports: import datetime
  import gzip
  import fsspec
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
  import satpy.tests.reader_tests.gms.test_gms5_vissr_data
  from satpy.readers import FSFile
  from satpy.tests.reader_tests.utils import get_jit_methods, skip_numba_unstable_if_missing
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 7 for calling the VissrFileWriter obj's underlying member method code with example usage: obj._write(fd, data, offset) without return types