code: def trk_loader(filename):
      try:
          with TemporaryDirectory() as tmp_dir:
              load_trk(
                  os.path.join(tmp_dir, filename),
                  FILEPATH_DIX["gs.nii"],
              )
          return True
      except ValueError:
          return False
  
imports: import os
  from tempfile import TemporaryDirectory
  from urllib.error import URLError, HTTPError
  from dipy.data import get_fnames
  from dipy.io.streamline import load_tractogram, save_tractogram, load_trk, save_trk
  from dipy.io.stateful_tractogram import Space, StatefulTractogram
  from dipy.io.utils import create_nifti_header
  from dipy.io.vtk import save_vtk_streamlines, load_vtk_streamlines
  from dipy.tracking.streamline import Streamlines
  import numpy
  import numpy.testing
  import pytest
  from dipy.utils.optpkg import optional_package
label_desc: Use image node_id 11 for calling a global function with example usage: trk_loader(filename) and returns: True, False