code: def _get_postfixed_filename(fl, postfix):
      return fl if fl.endswith(postfix) else fl + postfix
  
imports: import gzip
  import json
  import logging
  import time
  import warnings
  from collections.abc import Iterable
  from itertools import cycle
  import matplotlib
  import matplotlib.pyplot
  import numpy
  from matplotlib import colors
  from pytorch3d.implicitron.tools.vis_utils import get_visdom_connection
label_desc: Use image node_id 1 for calling a global function with example usage: _get_postfixed_filename(fl, postfix) and returns: unknown