code: def _gen_filename(self, name):
      if name == "out_file":
          return self._gen_outfilename()
      else:
          return None
  
imports: import os
  from ...utils.filemanip import split_filename
  from ..base import CommandLineInputSpec, CommandLine, traits, TraitedSpec, File
label_desc: Use image node_id 2 for calling the Trackvis2Camino obj's underlying member method code with example usage: obj._gen_filename(name) and returns: self, None