parameters: (self)
docstring: Perform port-specific work at the end of a test run.
docstring_summary: Perform port-specific work at the end of a test run.
docstring_tokens: Perform port - specific work at the end of a test run .
function: def clean_up_test_run(self):
          """Perform port-specific work at the end of a test run."""
          if self._image_differ:
              self._image_differ.stop()
              self._image_differ = None
function_tokens: def clean_up_test_run ( self ) : if self . _image_differ : self . _image_differ . stop ( ) self . _image_differ = None