code: def end_file(fid):
      """Write the closing tags to a fif file and closes the file."""
      write_nop(fid, last=True)
      check_fiff_length(fid)
      fid.close()
  
imports: import os.path
  import re
  import time
  import uuid
  from contextlib import contextmanager
  from gzip import GzipFile
  import numpy
  from scipy.sparse import csc_matrix, csr_matrix
  from ..utils import _file_like, _validate_type, logger
  from ..utils.numerics import _cal_to_julian
  from .constants import FIFF
label_desc: Use image node_id 29 for calling a global function with example usage: end_file(fid) without return types