Start polling for a stop event or ready event and do small work via
		:meth:`.WPollingThreadTask._polling_iteration` method call

		:return: None

def thread_started(self):
		""" Start polling for a stop event or ready event and do small work via
		:meth:`.WPollingThreadTask._polling_iteration` method call

		:return: None
		"""
		while self.check_events() is False:
			self._polling_iteration()
			self.stop_event().wait(self.polling_timeout())