code: def _backend_versions_match():
      versions = _get_backend_versions()
      reference = {
          "netCDF4": Version("1.6.0"),
          "libnetcdf": Version("4.9.0"),
          "xarray": Version("2022.12.0"),
      }
      is_newer = [
          versions[module] >= reference[module] for module in versions
      ]
      all_newer = all(is_newer)
      all_older = not any(is_newer)
      return all_newer or all_older
  
file_path: satpy/satpy/writers/cf_writer.py
imports: import copy
  import logging
  import warnings
  import numpy
  import xarray
  from packaging.version import Version
  from satpy.cf.coords import EPOCH
  from satpy.writers import Writer
label_desc: Use image node_id 4 for calling a global function with example usage: _backend_versions_match() and returns: unknown