docs: def thread_exception(self, raised_exception):
  		""" Callback for handling exception, that are raised inside :meth:`.WThreadTask.thread_started`
  
  		:param raised_exception: raised exception
  		:return: None
  		"""
  		print('Thread execution was stopped by the exception. Exception: %s' % str(raised_exception))
  		print('Traceback:')
  		print(traceback.format_exc())