code: def __call__(self, orig, dest):
      old_inkscape = (
          mpl._get_executable_info("inkscape").version.major < 1
      )
      terminator = b"\n>" if old_inkscape else b"> "
      if not hasattr(self, "_tmpdir"):
          self._tmpdir = TemporaryDirectory()
          # On Windows, we must make sure that self._proc has terminated
          # (which __del__ does) before clearing _tmpdir.
          weakref.finalize(self._tmpdir, self.__del__)
      if (
          not self._proc or self._proc.poll() is not None  # First run.
      ):  # Inkscape terminated.
          if self._proc is not None and self._proc.poll() is not None:
              for stream in filter(
                  None,
                  [
                      self._proc.stdin,
                      self._proc.stdout,
                      self._proc.stderr,
                  ],
              ):
                  stream.close()
          env = {
              **os.environ,
              # If one passes e.g. a png file to Inkscape, it will try to
              # query the user for conversion options via a GUI (even with
              # `--without-gui`).  Unsetting `DISPLAY` prevents this (and
              # causes GTK to crash and Inkscape to terminate, but that'll
              # just be reported as a regular exception below).
              "DISPLAY": "",
              # Do not load any user options.
              "INKSCAPE_PROFILE_DIR": self._tmpdir.name,
          }
          # Old versions of Inkscape (e.g. 0.48.3.1) seem to sometimes
          # deadlock when stderr is redirected to a pipe, so we redirect it
          # to a temporary file instead.  This is not necessary anymore as of
          # Inkscape 0.92.1.
          stderr = TemporaryFile()
          self._proc = subprocess.Popen(
              ["inkscape", "--without-gui", "--shell"]
              if old_inkscape
              else ["inkscape", "--shell"],
              stdin=subprocess.PIPE,
              stdout=subprocess.PIPE,
              stderr=stderr,
              env=env,
              cwd=self._tmpdir.name,
          )
          # Slight abuse, but makes shutdown handling easier.
          self._proc.stderr = stderr
          try:
              self._read_until(terminator)
          except _ConverterError as err:
              raise OSError(
                  "Failed to start Inkscape in interactive mode:\n\n"
                  + err.args[0]
              ) from err
  
      # Inkscape's shell mode does not support escaping metacharacters in the
      # filename ("\n", and ":;" for inkscape>=1).  Avoid any problems by
      # running from a temporary directory and using fixed filenames.
      inkscape_orig = Path(self._tmpdir.name, os.fsdecode(b"f.svg"))
      inkscape_dest = Path(self._tmpdir.name, os.fsdecode(b"f.png"))
      try:
          inkscape_orig.symlink_to(Path(orig).resolve())
      except OSError:
          shutil.copyfile(orig, inkscape_orig)
      self._proc.stdin.write(
          b"f.svg --export-png=f.png\n"
          if old_inkscape
          else b"file-open:f.svg;export-filename:f.png;export-do;file-close\n"
      )
      self._proc.stdin.flush()
      try:
          self._read_until(terminator)
      except _ConverterError as err:
          # Inkscape's output is not localized but gtk's is, so the output
          # stream probably has a mixed encoding.  Using the filesystem
          # encoding should at least get the filenames right...
          self._proc.stderr.seek(0)
          raise ImageComparisonFailure(
              self._proc.stderr.read().decode(
                  sys.getfilesystemencoding(), "replace"
              )
          ) from err
      os.remove(inkscape_orig)
      shutil.move(inkscape_dest, dest)
  
imports: import atexit
  import functools
  import hashlib
  import logging
  import os
  from pathlib import Path
  import shutil
  import subprocess
  import sys
  from tempfile import TemporaryDirectory, TemporaryFile
  import weakref
  import numpy
  from PIL import Image
  import matplotlib
  from matplotlib import cbook
  from matplotlib.testing.exceptions import ImageComparisonFailure
label_desc: Use image node_id 1 for calling the _SVGConverter obj's underlying member method code with example usage: obj.__call__(orig, dest) without return types