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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 async def wait_for_all_to_process(self, *matchers, eventlist = None, eventdict = None, callback = None):
 """ Similar to `waitForAll`, but set `canignore=True` for these events. This ensures blocking events are processed correctly. """

        def _callback(event, matcher):
            event.canignore = True
            if callback:
                callback(event, matcher)
        return await self.wait_for_all(*matchers, eventlist=eventlist,
                                       eventdict=eventdict, callback=_callback)