code: def _temp_analyze_files(tmpdir):
      """Generate temporary analyze file pair."""
      img_dir = tmpdir.mkdir("img")
      orig_img = img_dir.join("orig.img")
      orig_hdr = img_dir.join("orig.hdr")
      orig_img.open("w")
      orig_hdr.open("w")
      return orig_img.strpath, orig_hdr.strpath
  
imports: import os
  import copy
  import simplejson
  import glob
  import os.path
  from subprocess import Popen
  import hashlib
  from collections import namedtuple
  import pytest
  import nipype
  import nipype.interfaces.io
  from nipype.interfaces.base.traits_extension import isdefined
  from nipype.interfaces.base import Undefined, TraitError
  from nipype.utils.filemanip import dist_is_editable
  from subprocess import check_call, CalledProcessError
label_desc: Use image node_id 13 for calling a global function with example usage: _temp_analyze_files(tmpdir) and returns: orig_img,  orig_hdr