class_docstr: Test the path hook for source.
class_docstr_tok: ["Test","the","path","hook","for","source","."]
code: def path_hook(self):
      return self.machinery.FileFinder.path_hook(
          (
              self.machinery.SourceFileLoader,
              self.machinery.SOURCE_SUFFIXES,
          )
      )
  
imports: from test.test_importlib import util
  import unittest
label_desc: Use image node_id 1 for calling the PathHookTest obj's underlying member method code with example usage: obj.path_hook() and returns: self