code: def currentFile(self):
      item = self.ui.exampleTree.currentItem()
      if hasattr(item, "file"):
          return os.path.join(path, item.file)
      return None
  
imports: import keyword
  import os
  import pkgutil
  import re
  import subprocess
  import sys
  from argparse import Namespace
  from collections import OrderedDict
  from functools import lru_cache
  import pyqtgraph
  from pyqtgraph.Qt import QT_LIB, QtCore, QtGui, QtWidgets
  import exampleLoaderTemplate_generic
  import utils
label_desc: Use image node_id 12 for calling the ExampleLoader obj's underlying member method code with example usage: obj.currentFile() and returns: None, os